Set version to 44 and 1.5.1-SNAPSHOT
Issue #169: Initial cut at german language translation.
Refactor out CategoryHandler to a regular class instead of internal.
Initial refactoring for Grid view indicator and toggle.

This refactors the MovieBrowserActivity to use the new
SerenityMultiViewVideoActivity.
Refactor TV Show to use new MultiViewActivity class.
Upgrade to android-maven-plugin 3.8.0
Refactor category saving
Issue #170: Force Close when switching views with Genre category

A force close would occur when the Genre was selected and subcategory was
not being saved or passed.  Also the code was not taking into account the
secondary level to make sure the secondary category would be refreshed.
Issue #168: Fix possible Illegal State exception with mediaplayer

Possibility that the media player can get into an illegal state causing a
force close to occur when trying to start a video.
Issue #167: Add logging for subtitle selection detection

Added some logging with MX Player and MX Player pro to help detect if the
subtitles are being passed to the external player correctly.
Update serenity-app-tests
Release 1.5.1