Added string resource for app opened preference.
Make prefs helper increase number of times app was opened.
Added version to output apk.
Merge branch 'master' into rating_dialog
Can rate app boolean flag.
Translated app store rating strings.
Fixed type error.
Fixed key error.
App rater feature done.
App rater feature done.
Merge remote-tracking branch 'origin/master' into music_quizz

Conflicts:
	skipshuffle/src/main/java/com/dontbelievethebyte/skipshuffle/utilities/preferences/PreferencesHelper.java
	skipshuffle/src/main/res/values-ar/strings.xml
	skipshuffle/src/main/res/values-de/strings.xml
	skipshuffle/src/main/res/values-el/strings.xml
	skipshuffle/src/main/res/values-es/strings.xml
	skipshuffle/src/main/res/values-fr/strings.xml
	skipshuffle/src/main/res/values-hi/strings.xml
	skipshuffle/src/main/res/values-it/strings.xml
	skipshuffle/src/main/res/values-ja/strings.xml
	skipshuffle/src/main/res/values-pt/strings.xml
	skipshuffle/src/main/res/values-ru/strings.xml
	skipshuffle/src/main/res/values-zh/strings.xml
	skipshuffle/src/main/res/values/strings.xml