Add scribe dependency (support oAuth)

With this library Android Rivers can integrate with tons of services.
Remove the PodcastPlayerActivity and go to the dialog route instead.
Now we sorta have a decent player that plays in the background.
Handle audio focus.
Handle podcast playing with internal player.
Rename download_progress to notification_download_progress
Handling renaming of notification layout.
Now when you click on another podcast title while playing or pausing, it will show the currently played podcast.
Handle audio progress threading.
Allow seek to a position.
Add progress number
Set button to Play (from Pause) when SeekBar is modified.
Fix the bug in schema update.  The runtime error on Android 2.2 also went away after upgrading Kotlin plugin.
Use string resources instead of hard coded string
Tweaks the visual of the progress dialog.
Now get the progress handling correctly implemented.
Increment the version number.
Handle resume and play ...
Make resume and play for robust.
Make ATOM detection more accurate

This ATOM detection change fixes a lot of feeds that otherwise cannot be
viewed in Android Rivers.