This change adds the ability to display TV show posters and episode
previews in fullscreen.
Add the fullscreen layout
Remove the orientation lock from the fullscreen image viewer.
Add trakt credentials helper that will launch auth flow.
No need to hide watchlist action, watchlist only displayed with valid credentials.
Doc fix.
Use new ensureTraktCredentials for rating everywhere.
Merge branch 'fullscreen' of https://github.com/adneal/SeriesGuide into adneal-fullscreen
New backwards compatible fullscreen theme.
Add missing color.
Fix fullscreen background.
Visual feedback for fullscreen image.
Add SystemUiHider and helpers.
Use SystemUiHider in fullscreen activity.
Merge branch 'adneal-fullscreen' into beta
upstream stuff