Fix #42 duplicate tracks in playlist when adding
Added some gui instructions to the user
#33 added basic player gui
#33 show player fragment and add action listeners
#33 show player fragment and add action listeners
#33 add default action for player fragment
#40 loading fragment added
#47 Added length to track handling
#33 sending actions to mqtt worker
#40 forgot to add loading dialog fragment
#33 added action handler in main activity
Updated manifest for 4.0 support
Merge branch 'playlistmanager' into development