Possible fix for the long standing long click bug in the gallery.
Fix issue with Gallery and Long Presses

Long standing bug with the Gallery views, they weren't checking to see if
the Long press had been handled already or not.  This change adds a boolean flag
that is checked before calling performItemClick to make sure that the long
press hasn't handled the request already.
Remove Gallery from TV Shows and Seasons views replace with SerenityGallery

Replaced the old deprecated Gallery with our custom Gallery that has
more features and fixes the Long Click bug.