diff --git a/app/src/main/res/drawable-hdpi/ic_notifications_black_24dp.png b/app/src/main/res/drawable-hdpi/ic_notifications_black_24dp.png
deleted file mode 100644
index e200012..0000000
Binary files a/app/src/main/res/drawable-hdpi/ic_notifications_black_24dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable-mdpi/ic_notifications_black_24dp.png b/app/src/main/res/drawable-mdpi/ic_notifications_black_24dp.png
deleted file mode 100644
index b36475d..0000000
Binary files a/app/src/main/res/drawable-mdpi/ic_notifications_black_24dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable-v21/ic_notifications_black_24dp.xml b/app/src/main/res/drawable-v21/ic_notifications_black_24dp.xml
deleted file mode 100644
index 14f20f9..0000000
--- a/app/src/main/res/drawable-v21/ic_notifications_black_24dp.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-            android:fillColor="#FF000000"
-            android:pathData="M11.5,22c1.1,0 2,-0.9 2,-2h-4c0,1.1 0.9,2 2,2zm6.5,-6v-5.5c0,-3.07 -2.13,-5.64 -5,-6.32V3.5c0,-0.83 -0.67,-1.5 -1.5,-1.5S10,2.67 10,3.5v0.68c-2.87,0.68 -5,3.25 -5,6.32V16l-2,2v1h17v-1l-2,-2z"/>
-</vector>
diff --git a/app/src/main/res/drawable-xhdpi/ic_notifications_black_24dp.png b/app/src/main/res/drawable-xhdpi/ic_notifications_black_24dp.png
deleted file mode 100644
index 7de8581..0000000
Binary files a/app/src/main/res/drawable-xhdpi/ic_notifications_black_24dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable-xxhdpi/ic_notifications_black_24dp.png b/app/src/main/res/drawable-xxhdpi/ic_notifications_black_24dp.png
deleted file mode 100644
index ab8a9c4..0000000
Binary files a/app/src/main/res/drawable-xxhdpi/ic_notifications_black_24dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable-xxxhdpi/ic_notifications_black_24dp.png b/app/src/main/res/drawable-xxxhdpi/ic_notifications_black_24dp.png
deleted file mode 100644
index 86f89d7..0000000
Binary files a/app/src/main/res/drawable-xxxhdpi/ic_notifications_black_24dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable/delete_reset_button.xml b/app/src/main/res/drawable/delete_reset_button.xml
deleted file mode 100644
index f2acc88..0000000
--- a/app/src/main/res/drawable/delete_reset_button.xml
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"
-    >
-    <gradient android:endColor="@color/middleblue" android:startColor="@color/middleblue" />
-    <corners android:radius="6dp" />
-</shape>
diff --git a/app/src/main/res/drawable/hints_display.xml b/app/src/main/res/drawable/hints_display.xml
deleted file mode 100644
index ad01d74..0000000
--- a/app/src/main/res/drawable/hints_display.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-    <gradient android:startColor="@color/transparent"
-        android:endColor="@color/transparent"
-        android:angle="270" />
-    <corners android:radius="3dp" />
-    <stroke android:width="10px" android:color="@color/colorPrimaryDark" />
-</shape>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_create_black_24dp.xml b/app/src/main/res/drawable/ic_create_black_24dp.xml
deleted file mode 100644
index 2ab2fb7..0000000
--- a/app/src/main/res/drawable/ic_create_black_24dp.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M3,17.25V21h3.75L17.81,9.94l-3.75,-3.75L3,17.25zM20.71,7.04c0.39,-0.39 0.39,-1.02 0,-1.41l-2.34,-2.34c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83 3.75,3.75 1.83,-1.83z"/>
-</vector>
diff --git a/app/src/main/res/drawable/ic_delete_black_24dp.xml b/app/src/main/res/drawable/ic_delete_black_24dp.xml
deleted file mode 100644
index 39e64d6..0000000
--- a/app/src/main/res/drawable/ic_delete_black_24dp.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
-    <path
-        android:fillColor="#FF000000"
-        android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z"/>
-</vector>
diff --git a/app/src/main/res/drawable/ic_star_blue_48dp.png b/app/src/main/res/drawable/ic_star_blue_48dp.png
deleted file mode 100644
index cd0bd03..0000000
Binary files a/app/src/main/res/drawable/ic_star_blue_48dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable/ic_star_grey_48dp.png b/app/src/main/res/drawable/ic_star_grey_48dp.png
deleted file mode 100644
index 91ea2da..0000000
Binary files a/app/src/main/res/drawable/ic_star_grey_48dp.png and /dev/null differ
diff --git a/app/src/main/res/drawable/numpad_highlighted_two.xml b/app/src/main/res/drawable/numpad_highlighted_two.xml
deleted file mode 100644
index 578ee42..0000000
--- a/app/src/main/res/drawable/numpad_highlighted_two.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle">
-    <gradient
-        android:endColor="@color/lightblue"
-        android:startColor="@color/lightblue" />
-    <corners android:radius="6dp" />
-    <stroke
-        android:width="10px"
-        android:color="@color/middleblue" />
-</shape>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/side_nav_bar.xml b/app/src/main/res/drawable/side_nav_bar.xml
deleted file mode 100644
index c145985..0000000
--- a/app/src/main/res/drawable/side_nav_bar.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<shape xmlns:android="http://schemas.android.com/apk/res/android"
-    android:shape="rectangle" >
-    <gradient
-        android:startColor="#81C784"
-        android:centerColor="#4CAF50"
-        android:endColor="#2E7D32"
-        android:type="linear"
-        android:angle="135"/>
-</shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout-land/welcome_dialog.xml b/app/src/main/res/layout-land/welcome_dialog.xml
deleted file mode 100644
index f055044..0000000
--- a/app/src/main/res/layout-land/welcome_dialog.xml
+++ /dev/null
@@ -1,85 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="horizontal"
-    android:gravity="center"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:padding="@dimen/activity_horizontal_margin"
-    android:weightSum="2">
-
-    <LinearLayout
-        android:layout_width="0px"
-        android:layout_height="match_parent"
-        android:orientation="vertical"
-        android:gravity="center"
-        android:layout_weight="1">
-        <TextView
-            android:layout_width="wrap_content"
-            android:gravity="center"
-            android:layout_height="wrap_content"
-            android:text="@string/welcome" />
-        <TextView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textStyle="bold"
-            android:text="@string/field_select_description_headline"
-            style="@style/Base.DialogWindowTitle.AppCompat"/>
-        <LinearLayout
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layoutDirection="ltr"
-            android:orientation="horizontal">
-            <ImageView
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="center"
-                android:src="@drawable/ic_keyboard_arrow_left_black_24dp"/>
-            <ImageView
-                android:layout_width="100dp"
-                android:layout_height="100dp"
-                android:adjustViewBounds="true"
-                android:layout_gravity="center"
-                android:src="@drawable/icon_default_9x9"/>
-            <ImageView
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="center"
-                android:src="@drawable/ic_keyboard_arrow_right_black_24dp"/>
-        </LinearLayout>
-        <TextView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:gravity="center"
-            android:text="@string/field_select_description"/>
-
-    </LinearLayout>
-
-    <LinearLayout
-        android:layout_width="0px"
-        android:layout_height="match_parent"
-        android:orientation="vertical"
-        android:gravity="center"
-        android:layout_weight="1">
-        <TextView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:textStyle="bold"
-            android:text="@string/difficulty_description_headline"
-            style="@style/Base.DialogWindowTitle.AppCompat"/>
-        <RatingBar
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:id="@+id/difficultyBar"
-            android:layout_gravity="center_horizontal"
-            android:isIndicator="true"
-            android:numStars="3"
-            android:rating="1"
-            android:stepSize="1"
-            style="@style/RatingBar"/>
-        <TextView
-            android:layout_width="wrap_content"
-            android:gravity="center"
-            android:layout_height="wrap_content"
-            android:text="@string/difficulty_description"/>
-    </LinearLayout>
-</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index b8ab594..b615e5a 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -5,7 +5,6 @@
     <string name="menu_settings">Einstellungen</string>
     <string name="menu_highscore">Statistik</string>
     <string name="menu_main">Hauptmenü</string>
-    <string name="menu_group">Gruppe</string>
     <string name="menu_help">Hilfe</string>
     <string name="menu_about">Über</string>
 
@@ -45,12 +44,9 @@
     <string name="pref_group_highlight_selection">Auswahl hervorheben</string>
     <string name="pref_group_highlight_value">Wert hervorheben</string>
     <string name="pref_header_game">Spiel</string>
-    <string name="pref_header_highlight">Hervorhebung</string>
     <string name="pref_highlight_notes">Notizen</string>
     <string name="pref_highlight_vals">Gleiche Werte</string>
     <string name="pref_symbols">Symbole</string>
-    <string name="title_activity_load_game">Spiel laden</string>
-    <string name="stats_name">Statistik</string>
     <string name="reset_stats">Alles zurücksetzen</string>
     <string name="reset_confirmation_confirm">Zurücksetzen</string>
     <string name="reset_confirmation">Bist du dir sicher, dass du das komplette Spielfeld zurücksetzen möchtest?</string>
@@ -74,21 +70,13 @@
     <string name="help_keyboard">Tastatur</string>
     <string name="help_hint_summary">Zeige die korrekte Lösung für das ausgewählte Feld</string>
     <string name="help_hint">Hinweis</string>
-    <string name="help_gamefield">Spielfeld</string>
     <string name="help_do_summary">Stellt die letzte rückgängig gemachte Aktion wieder her</string>
     <string name="help_do">Wiederherstellen</string>
     <string name="help_delete_summary">Löscht das ausgewählte Feld</string>
     <string name="help_delete">Löschen</string>
-    <string name="header_help">Hilfe</string>
     <string name="help_privacyInfo">Privatsphäre Information</string>
     <string name="pref_timer_reset">Zeit zurücksetzen</string>
     <string name="pref_timer_reset_summary">Beim zurücksetzen des Spielfeldes wird die Zeit auch zurückgesetzt.</string>
-    <string name="welcome">Willkommen zu Privacy Friendly Sudoku.</string>
-    <string name="field_select_description_headline">Spielmodus:</string>
-    <string name="field_select_description">Wische oder drücke auf die Pfeile auf der linken und rechten Seite um den Spielmodus zu ändern.</string>
-    <string name="difficulty_description_headline">Schwierigkeitsstufe:</string>
-    <string name="difficulty_description">Drücke oder wische über die Sterne um den Schwierigkeitsgrad zu ändern.</string>
-    <string name="view_help">Siehe Hilfe</string>
     <string name="okay">Okay</string>
     <string name="difficulty_challenge">Profi</string>
 
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index b9f3c1f..fb2833b 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="about_affiliation">En conjunción con:</string>
-    <string name="header_help">Ayuda</string>
     <string name="about_author">Autor:</string>
     <string name="about_qqwing">Está Aplicación utiliza una versión modificada de QQWing v1.3.4</string>
     <string name="average_time">Tiempo promedio:</string>
@@ -16,7 +15,6 @@
     <string name="help_delete_summary">Borrar el campo seleccionado</string>
     <string name="help_do">Rehacer</string>
     <string name="help_do_summary">Rehacer la acción pasada</string>
-    <string name="help_gamefield">Campo de juego</string>
     <string name="help_hint">Consejo</string>
     <string name="help_hint_summary">Revelar el campo seleccionado\nAtención: Si se utiliza, el juego actual no va a valer como mejor tiempo.</string>
     <string name="help_keyboard">Teclado</string>
@@ -35,7 +33,6 @@
     <string name="loadgame_delete_confirmation">Está seguro que quiere borrar el juego actual?</string>
     <string name="menu_about">Sobre nosotros</string>
     <string name="menu_continue_game">Continuar juego</string>
-    <string name="menu_group">Grupo</string>
     <string name="menu_help">Ayuda</string>
     <string name="menu_highscore">Estadísticas</string>
     <string name="menu_main">Menu principal</string>
@@ -52,7 +49,6 @@
     <string name="pref_group_highlight_selection">Resaltar de las celdas conectadas.</string>
     <string name="pref_group_highlight_value">Resaltar de los valores.</string>
     <string name="pref_header_game">Juego</string>
-    <string name="pref_header_highlight">Resaltar</string>
     <string name="pref_highlight_connected">Celdas conectadas</string>
     <string name="pref_highlight_notes">Notas</string>
     <string name="pref_highlight_vals">Valores iguales</string>
@@ -61,9 +57,7 @@
     <string name="reset_confirmation">Está seguro que quiere reiniciar el juego actual?</string>
     <string name="reset_confirmation_confirm">Resetear</string>
     <string name="reset_stats">Resetear todo</string>
-    <string name="stats_name">Estadísticas</string>
     <string name="title_activity_help">Ayuda</string>
-    <string name="title_activity_load_game">Cargar juego</string>
     <string name="title_activity_settings">Configuraciones</string>
     <string name="total_of_time">Tiempo total jugado:</string>
     <string name="win_best_time">Nuevo mejor tiempo!</string>
@@ -73,17 +67,11 @@
     <string name="win_text">Felicitaciones!</string>
     <string name="win_time">Tiempo:</string>
     <string name="help_privacyInfo">Información de Privacidad</string>
-    <string name="difficulty_description">Presione o deslice para comenzar a cambiar la dificultad.</string>
-    <string name="difficulty_description_headline">Dificultad:</string>
-    <string name="field_select_description">Deslice o aprete el boton de la flecha a la izquierda o a la derecha para cambiar el modo de juego.</string>
-    <string name="field_select_description_headline">Modo de juego:</string>
     <string name="pref_timer_reset">Resetear Tiempo</string>
     <string name="pref_timer_reset_summary">El tiempo se resetea tambien, cuando el tablero se resetea.</string>
-    <string name="welcome">Bienvenido a Privacy Friendly Sudoku.</string>
     <string name="version_number">Versión:</string>
     <string name="about_author_contributors">" "</string>
     <string name="okay">Ok</string>
-    <string name="view_help">Ayuda</string>
     <string name="pref_keep_screen_on">Keep Screen On</string>
     <string name="pref_keep_screen_on_summary">Don\'t turn the screen off while playing</string>
 
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 20e42f5..b2a89d0 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -11,12 +11,10 @@
     <string name="difficulty_challenge">Challenge</string>
     <string name="gametype_unspecified">Indéterminé</string>
     <string name="generating">Générer nouveau niveau en arrière-plan…</string>
-    <string name="header_help">Aide</string>
     <string name="help_delete">Éffacer</string>
     <string name="help_delete_summary">Efface un champ sélectionné</string>
     <string name="help_do">Refaire</string>
     <string name="help_do_summary">Refais la dernière action</string>
-    <string name="help_gamefield">Chamo de jeu</string>
     <string name="help_hint">Conseille</string>
     <string name="help_hint_summary">Montre le champ sélectionné</string>
     <string name="help_keyboard">Clavier</string>
@@ -36,7 +34,6 @@
     <string name="loadgame_delete_confirmation">Êtes-vous sûr que voulez effacer l\'enregistrement?</string>
     <string name="menu_about">À propos</string>
     <string name="menu_continue_game">Continuer</string>
-    <string name="menu_group">Groupe</string>
     <string name="menu_help">Aide</string>
     <string name="menu_highscore">Statistiques</string>
     <string name="menu_main">Menu principal</string>
@@ -53,7 +50,6 @@
     <string name="pref_group_highlight_selection">Mettre la sélection en surbrillance</string>
     <string name="pref_group_highlight_value">Mettre la valeur en surbrillance</string>
     <string name="pref_header_game">Jeu</string>
-    <string name="pref_header_highlight">Surbrillance</string>
     <string name="pref_highlight_connected">Cases connectées</string>
     <string name="pref_highlight_notes">Remarques</string>
     <string name="pref_highlight_vals">Valeurs différentes</string>
@@ -62,9 +58,7 @@
     <string name="reset_confirmation">Êtes-vous sûr que vous voulez refaire le tableau?</string>
     <string name="reset_confirmation_confirm">Refaire</string>
     <string name="reset_stats">Effacer statistiques</string>
-    <string name="stats_name">Statistiques</string>
     <string name="title_activity_help">Aide</string>
-    <string name="title_activity_load_game">Charger jeu</string>
     <string name="title_activity_settings">Paramètres</string>
     <string name="total_of_time">Temps total de jeu :</string>
     <string name="win_best_time">Nouveau record !</string>
@@ -73,17 +67,11 @@
     <string name="win_show_game">Montrer champs de jeu</string>
     <string name="win_text">Félicitations !</string>
     <string name="win_time">Temps :</string>
-    <string name="difficulty_description">Appuyez ou faites glisser les étoiles pour changer la difficulté.</string>
-    <string name="difficulty_description_headline">Difficulté :</string>
-    <string name="field_select_description">Faites glisser ou appuyez sur les boutons flèches à gauche et à droite pour changer le mode de jeu.</string>
-    <string name="field_select_description_headline">Mode de jeu :</string>
     <string name="pref_timer_reset">Réinitialiser le minuteur</string>
     <string name="pref_timer_reset_summary">Aussi réinitialiser le minuteur en réinitialisant le jeux en cours.</string>
-    <string name="welcome">Bienvenue à Privacy Friendly Sudoku.</string>
     <string name="about_author_contributors">" "</string>
     <string name="version_number">Version:</string>
     <string name="okay">Ok</string>
-    <string name="view_help">Aide</string>
     <string name="pref_keep_screen_on">Keep Screen On</string>
     <string name="pref_keep_screen_on_summary">Don\'t turn the screen off while playing</string>
 
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 3e009eb..fcee501 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -7,19 +7,16 @@
     <string name="menu_main">メインメニュー</string>
     <string name="menu_settings">設定</string>
     <string name="menu_highscore">ハイスコア</string>
-    <string name="menu_group">グループ</string>
     <string name="menu_help">ヘルプ</string>
     <string name="menu_about">アプリについて</string>
     <string name="menu_reset">ボードをリセット</string>
     <string name="menu_continue_game">ゲームを続ける</string>
 
-    <string name="title_activity_load_game">ゲームをロード</string>
     <string name="generating">バックグラウンドで新しいレベルを生成中&#8230;</string>
 
     <!-- ###SETTINGS### -->
     <string name="title_activity_settings">設定</string>
     <!-- #Highlight -->
-    <string name="pref_header_highlight">ハイライト</string>
     <string name="pref_group_highlight_selection">選択のハイライト</string>
     <string name="pref_highlight_connected">接続したフィールド</string>
     <string name="pref_group_highlight_value">数のハイライト</string>
@@ -74,18 +71,12 @@
     <string name="reset_confirmation_confirm">リセット</string>
 
     <!-- ### Welcome Dialog ### -->
-    <string name="welcome">プライバシーフレンドリー Sudoku へようこそ。</string>
-    <string name="field_select_description">スワイプまたは左右の矢印ボタンを押して、ゲームモードを変更します。</string>
-    <string name="field_select_description_headline">ゲームモード:</string>
-    <string name="difficulty_description">星を押すかスワイプして難易度を変えます。</string>
-    <string name="difficulty_description_headline">難易度:</string>
 
     <!-- ### Continue Game ### -->
     <string name="loadgame_delete_confirmation">このセーブを削除してもよろしいですか?</string>
     <string name="loadgame_delete_confirm">削除</string>
 
     <!-- ### Stats ###-->
-    <string name="stats_name">統計</string>
     <string name="number_of_hints"># 使用したヒント:</string>
     <string name="number_of_games"># 完了したゲーム:</string>
     <string name="total_of_time">合計プレイタイム:</string>
@@ -103,9 +94,7 @@
     <string name="win_best_time">新記録!</string>
 
     <!-- ### HELP prefs ###-->
-    <string name="header_help">ヘルプ</string>
     <string name="help_keyboard">キーボード</string>
-    <string name="help_gamefield">ゲームフィールド</string>
     <string name="help_keyhighlighted_summary">数が選択されていることを示します。 このモードでは、フィールドを選択しなくても、フィールドに触れると数がすぐにセットされます。</string>
     <string name="help_keyhighlighted_yellow_summary">ここに正しい数が置かれたことを示します。</string>
 
@@ -124,7 +113,6 @@
     <string name="help_permissions">アクセス許可</string>
     <string name="help_permissions_summary">プライバシーフレンドリー Sudoku はいかなるアクセス許可も使用していません。</string>
     <string name="okay">OK</string>
-    <string name="view_help">ヘルプを表示</string>
 
     <string name="pref_keep_screen_on">画面をオンのままにする</string>
     <string name="pref_keep_screen_on_summary">プレイ中は画面をオフにしません</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index a8cbd73..f26df1b 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -11,12 +11,10 @@
     <string name="difficulty_challenge">вызов</string>
     <string name="gametype_unspecified">Необычный</string>
     <string name="generating">Генерирую новый уровень на заднем плане…</string>
-    <string name="header_help">Помощь</string>
     <string name="help_delete">Удалить</string>
     <string name="help_delete_summary">Удаляет выбранное поле</string>
     <string name="help_do">Вернуть</string>
     <string name="help_do_summary">Возвращает отменённое действие</string>
-    <string name="help_gamefield">Игровое поле</string>
     <string name="help_hint">Подсказка</string>
     <string name="help_hint_summary">Показывает правильное решение для указанного поля</string>
     <string name="help_keyboard">Клавиатура</string>
@@ -43,9 +41,7 @@
     <string name="menu_continue_game">Продолжить игру</string>
     <string name="total_of_time">Общее время:</string>
     <string name="title_activity_settings">Настройки</string>
-    <string name="title_activity_load_game">Загрузить игру</string>
     <string name="title_activity_help">Помощь</string>
-    <string name="stats_name">Статистика</string>
     <string name="reset_stats">Сбросить всё.</string>
     <string name="reset_confirmation_confirm">Сброс</string>
     <string name="reset_confirmation">Ты уверен что хочеш сбросить поле?</string>
@@ -54,7 +50,6 @@
     <string name="pref_highlight_vals">Одинаковые значения</string>
     <string name="pref_highlight_notes">Заметки</string>
     <string name="pref_highlight_connected">Связанные поля</string>
-    <string name="pref_header_highlight">Выделение</string>
     <string name="pref_header_game">Игра</string>
     <string name="pref_group_highlight_value">Выделить поле</string>
     <string name="new_game">Новая игра</string>
@@ -64,7 +59,6 @@
     <string name="pref_automatic_note_deletion_summary">Автоматическое удаление заметок при вводе поля.</string>
     <string name="pref_group_game">Настройки</string>
     <string name="pref_group_highlight_selection">Выделить выбор</string>
-    <string name="menu_group">Група</string>
     <string name="menu_help">Помощь</string>
     <string name="menu_highscore">Статистика</string>
     <string name="menu_main">Главное меню</string>
@@ -73,17 +67,11 @@
     <string name="min_time">Лучшее время:</string>
     <string name="more_info">Больше информации на:</string>
     <string name="help_privacyInfo">Информация конфиденциальности</string>
-    <string name="difficulty_description_headline">Сложность:</string>
-    <string name="difficulty_description">Коснитесь для изменения уровня сложности.</string>
-    <string name="field_select_description">Используйте стрелки слева и справа, либо пролистайте режимы для выбора режима игры.</string>
-    <string name="field_select_description_headline">Режим игры:</string>
     <string name="pref_timer_reset">Сброс таймера</string>
     <string name="pref_timer_reset_summary">Сброс таймера при сбросе доски.</string>
-    <string name="welcome">Добро пожаловать в Privacy Friendly Sudoku.</string>
     <string name="about_author_contributors">" "</string>
     <string name="version_number">Версия:</string>
     <string name="okay">Ok</string>
-    <string name="view_help">Помощь</string>
 
     <string name="pref_keep_screen_on">Keep Screen On</string>
     <string name="pref_keep_screen_on_summary">Don\'t turn the screen off while playing</string>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 0b9da0f..51d999e 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -19,7 +19,6 @@
     <string name="menu_settings">设置</string>
     <string name="menu_highscore">统计</string>
     <string name="menu_main">主页</string>
-    <string name="menu_group">组</string>
     <string name="menu_help">帮助</string>
     <string name="menu_about">关于</string>
     <string name="title_activity_settings">设置</string>
@@ -44,12 +43,9 @@
     <string name="pref_group_highlight_selection">突出选择</string>
     <string name="pref_group_highlight_value">突出数字</string>
     <string name="pref_header_game">游戏</string>
-    <string name="pref_header_highlight">突出</string>
     <string name="pref_highlight_notes">备注ƒ</string>
     <string name="pref_highlight_vals">相同数字</string>
     <string name="pref_symbols">符号</string>
-    <string name="title_activity_load_game">读取游戏</string>
-    <string name="stats_name">统计</string>
     <string name="reset_stats">全部重置</string>
     <string name="reset_confirmation_confirm">重置</string>
     <string name="reset_confirmation">你确定想要重置游戏领域吗？</string>
@@ -67,22 +63,14 @@
     <string name="help_keyboard">键盘</string>
     <string name="help_hint_summary">显示选择空格的答案</string>
     <string name="help_hint">提示</string>
-    <string name="help_gamefield">游戏领域</string>
     <string name="help_do_summary">恢复删除的选择</string>
     <string name="help_do">恢复</string>
     <string name="help_delete_summary">删除你选择的数字</string>
-    <string name="header_help">帮助</string>
     <string name="help_privacyInfo">私人信息</string>
-    <string name="difficulty_description">扫或者点击星星换难度</string>
-    <string name="difficulty_description_headline">难度</string>
-    <string name="field_select_description">扫或者点击左边箭头或者右边肩头换游戏模式</string>
-    <string name="field_select_description_headline">游戏模式</string>
     <string name="pref_timer_reset">定时复位</string>
     <string name="pref_timer_reset_summary">定时复位如果重置领域</string>
-    <string name="welcome">欢迎</string>
     <string name="about_author_contributors">" "</string>
     <string name="okay">Ok</string>
-    <string name="view_help">帮助</string>
     <string name="version_number">Version</string>
 
     <string name="pref_keep_screen_on">Keep Screen On</string>
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 227286b..5d3703e 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -2,12 +2,8 @@
     <!-- Default screen margins, per the Android Design guidelines. -->
     <dimen name="activity_horizontal_margin">13dp</dimen>
     <dimen name="activity_vertical_margin">13dp</dimen>
-    <dimen name="fab_margin">13dp</dimen>
     <!-- Default screen margins, per the Android Design guidelines. -->
-    <dimen name="nav_header_vertical_spacing">13dp</dimen>
     <dimen name="nav_header_height">160dp</dimen>
-    <dimen name="appbar_padding_top">8dp</dimen>
-    <dimen name="app_bar_height">24dp</dimen>
     <dimen name="text_margin">16dp</dimen>
 
 
@@ -21,7 +17,6 @@
     <dimen name="img_width_height">120dp</dimen>
     <dimen name="slide_title">30dp</dimen>
     <dimen name="slide_desc">16dp</dimen>
-    <dimen name="slide_actions">20dp</dimen>
     <dimen name="desc_padding">40dp</dimen>
 
 </resources>
diff --git a/app/src/main/res/values/drawables.xml b/app/src/main/res/values/drawables.xml
index 52c6a6c..3505456 100644
--- a/app/src/main/res/values/drawables.xml
+++ b/app/src/main/res/values/drawables.xml
@@ -1,8 +1 @@
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-    <item name="ic_menu_camera" type="drawable">@android:drawable/ic_menu_camera</item>
-    <item name="ic_menu_gallery" type="drawable">@android:drawable/ic_menu_gallery</item>
-    <item name="ic_menu_slideshow" type="drawable">@android:drawable/ic_menu_slideshow</item>
-    <item name="ic_menu_manage" type="drawable">@android:drawable/ic_menu_manage</item>
-    <item name="ic_menu_share" type="drawable">@android:drawable/ic_menu_share</item>
-    <item name="ic_menu_send" type="drawable">@android:drawable/ic_menu_send</item>
-</resources>
+<resources xmlns:android="http://schemas.android.com/apk/res/android"></resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f34ec4d..8222d56 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -9,7 +9,6 @@
     <string name="menu_main">Main Menu</string>
     <string name="menu_settings">Settings</string>
     <string name="menu_highscore">Highscore</string>
-    <string name="menu_group">Group</string>
     <string name="menu_help">Help</string>
     <string name="menu_about">About</string>
     <string name="menu_reset">Reset Board</string>
@@ -18,13 +17,11 @@
     <string name="navigation_drawer_open" translatable="false">Open navigation drawer</string>
     <string name="navigation_drawer_close" translatable="false">Close navigation drawer</string>
 
-    <string name="title_activity_load_game">Load Game</string>
     <string name="generating">Generating new level in the background&#8230;</string>
 
     <!-- ###SETTINGS### -->
     <string name="title_activity_settings">Settings</string>
     <!-- #Highlight -->
-    <string name="pref_header_highlight">Highlighting</string>
     <string name="pref_group_highlight_selection">Selection highlight</string>
     <string name="pref_highlight_connected">Connected Fields</string>
     <string name="pref_group_highlight_value">Value highlight</string>
@@ -89,18 +86,12 @@
     <string name="reset_confirmation_confirm">Reset</string>
 
     <!-- ### Welcome Dialog ### -->
-    <string name="welcome">Welcome to Privacy Friendly Sudoku.</string>
-    <string name="field_select_description">Swipe or press the arrow buttons on the left and right to change the game mode.</string>
-    <string name="field_select_description_headline">Game mode:</string>
-    <string name="difficulty_description">Press or swipe the stars to change the difficulty.</string>
-    <string name="difficulty_description_headline">Difficulty:</string>
 
     <!-- ### Continue Game ### -->
     <string name="loadgame_delete_confirmation">Are you sure you want to delete this save?</string>
     <string name="loadgame_delete_confirm">Delete</string>
 
     <!-- ### Stats ###-->
-    <string name="stats_name">Statistics</string>
     <string name="number_of_hints"># used hints:</string>
     <string name="number_of_games"># completed games:</string>
     <string name="total_of_time">Total time played:</string>
@@ -118,9 +109,7 @@
     <string name="win_best_time">New record!</string>
 
     <!-- ### HELP prefs ###-->
-    <string name="header_help">Help</string>
     <string name="help_keyboard">Keyboard</string>
-    <string name="help_gamefield">Game field</string>
     <string name="help_keyhighlighted_summary">Indicates that the value is selected. Values are set directly when touching fields in this mode, without selecting the field.</string>
     <string name="help_keyhighlighted_yellow_summary">Indicates that the correct number of values for this number have been placed.</string>
 
@@ -139,7 +128,6 @@
     <string name="help_permissions">Permissions</string>
     <string name="help_permissions_summary">Privacy Friendly Sudoku does not use any permissions.</string>
     <string name="okay">Okay</string>
-    <string name="view_help">View Help</string>
     <string name="difficulty_challenge">Challenge</string>
     <string name="pref_highlightInputError" translatable="false">Highlight input mistakes</string>
     <string name="pref_keep_screen_on">Keep Screen On</string>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 1e5c001..cba9695 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -31,20 +31,6 @@
         <item name="android:windowSoftInputMode">adjustPan|stateUnspecified</item>
     </style>
 
-    <style name="CoachMark">
-        <item name="android:windowIsTranslucent">true</item>
-        <item name="android:windowBackground">@color/transparent</item>
-        <item name="android:layout_height">fill_parent</item>
-        <item name="android:layout_width">fill_parent</item>
-        <item name="android:windowContentOverlay">@null</item>
-        <item name="android:windowNoTitle">true</item>
-        <item name="android:windowIsFloating">false</item>
-        <item name="android:backgroundDimEnabled">true</item>
-        <item name="android:windowFullscreen">true</item>
-        <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
-        <item name="android:windowSoftInputMode">adjustPan|stateUnspecified</item>
-    </style>
-
 
     <style name="RatingBarStyle" parent="@android:style/Widget.RatingBar">
         <item name="android:progressDrawable">@drawable/ratingbar</item>
diff --git a/app/src/main/res/xml/pref_help_headers.xml b/app/src/main/res/xml/pref_help_headers.xml
deleted file mode 100644
index 2493207..0000000
--- a/app/src/main/res/xml/pref_help_headers.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<preference-headers xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <!-- These settings headers are only used on tablets. -->
-
-    <header android:fragment="org.secuso.privacyfriendlysudoku.ui.HelpActivity$HelpFragment"
-        android:title="@string/header_help" android:icon="@drawable/ic_info_black_24dp" />
-
-</preference-headers>