Add v19 base themes with translucent system bars enabled.
Use SystemBarTint lib, set tint on status bar matching action bar.
Fix nav drawer padding with translucent sysbars.

- Introduced @bool/sgFitSystemWindows which is true on api 19+.
Fix padding in episode details activity for transl. system bars.
Revert "Use SystemBarTint lib, set tint on status bar matching action bar."

This reverts commit b5c70293b9a6c5ec665169d0ee65eeb015465e36.
Add SystemBarTint to SG deps.
Only set translucent system bars for immersive theme.
Drop episode_pager_wide layout.
Drop fitsSystemWindows from nav drawer elsewhere.
Merge branch 'translucent-sysbars' into beta