Before adding Parallax
Big Commit:
-Android L/Material Design UI. 
-Especialised UX for different pages.
-Added libraries for UI Effects.
-Added few animations.
-Added share button.
-Added images for other densities.
-App no longer downloads full JSON each time. Downloads smaller JSON
once per category to check if new posts available.
-Moved Favourites JSON to external storage. So that when app data/cache
is cleared, favourites are unaffected.
-Made app more stable.
-Added more personalised settings.
-Cleaned Up files and methods.