Option to disable app updates

app/src/main/res/values-ru/strings.xml

@@ -107,4 +107,5 @@
     <string name="application_update">Обновление приложения</string>
 	<string name="app_update_available">Доступно обновление приложения</string>
     <string name="about_app">О программе</string>
+	<string name="show_notification_app_update">Показывать уведомление при наличии новой версии</string>
 </resources>

app/src/main/res/values/constants.xml

@@ -11,6 +11,7 @@
 	<string name="key_grid_size">grid_size</string>
 	<string name="key_reader_switchers">reader_switchers</string>
 	<string name="key_app_update">app_update</string>
+	<string name="key_app_update_auto">app_update_auto</string>
 
 	<string name="key_parser_domain">domain</string>
 	<string-array name="values_theme">

app/src/main/res/values/strings.xml

@@ -108,4 +108,5 @@
     <string name="application_update">Application update</string>
 	<string name="app_update_available">Application update is available</string>
     <string name="about_app">About</string>
+	<string name="show_notification_app_update">Show notification if update is available</string>
 </resources>

app/src/main/res/xml/pref_about.xml

@@ -1,6 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-
+<PreferenceScreen
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto">
 
+	<SwitchPreference
+		android:defaultValue="true"
+		android:key="@string/key_app_update_auto"
+		android:summary="@string/show_notification_app_update"
+		android:title="@string/application_update"
+		app:allowDividerBelow="true"
+		app:iconSpaceReserved="false" />
 
 </PreferenceScreen>