Fix bug in connection callback
Update to Gradle 0.11 and SDK 19.1.0.
Updated SqueezePlayer integration

Add extras to the intent for the SqueezePlayer service, to ensure that
Squeezer and SqueezePlayer are running against the same server.

Send a keep alive intent every 10 minutes when a Squeezer activity is
active. This is to ensure that the LMS can see the player, and keep it
from removing it from the player-list.

Also made the handling of the server preferences slightly more object
oriented.
Merge remote-tracking branch 'nik/multi-player' into develop

Conflicts:
	gradle/wrapper/gradle-wrapper.properties
Fix race in player dropdown

ArrayAdapter does not like to have it's data changed by a background
thread, so we make a copy of the player list, before we give it to
the adapter.
Fix some lint errors

which emerged after the android studio upgrade