[feature] add "love" button to main screen and notification
[feature] add icons to "love" button in main screen and notification
[feature] some refactoring
[feature] fix database onCreate method
[feature][fix] add german translation
Merge branch 'issue-43' of git://github.com/ilya-murzinov/android-wail-app into ilya-murzinov-issue-43
[refactor][impr] little refactoring for StatusBarNotificationsManager and auto hiding "love track" notification, refs #43
[ui] hiding "love track" button if no track is playing, refs #43
Merge branch 'ilya-murzinov-issue-43' into develop
Merge branch 'develop' of github.com:artem-zinnatullin/android-wail-app into develop