FIX: remove next page for related videos (because APIv3 is broken)
UPD: clean up on special youtube folders
UPD: moved un-/subscribe from/to a channel in a helper module.
UPD: rework of subscription management via context menu
UPD: code cleaning
UPD: moved more context menus to yt_context_menu module
UPD: show notification with message if add to 'Watch Later' should return an error code
Merge branch 'error' into alpha28
FIX: crash while accessing none type for error validation.
UPD: rework of handling context menu
UPD: improved error handling
UPD: code cleaning
UPD: cleaned up path for manging playlists
ADD: subscribe to channel (from videos and playlist)
UPD: rework of handling context menu
FIX: remove next page for related videos (because APIv3 is broken)
Merge pull request #70 from bromix/alpha28

Alpha28