SlimActions: add new actions and cleanup

A bit cleanup.

As well add 4 actions:

- camera intent
- play/pause music
- next music track
- prev music track
- wake up device

As well check for system ready on the other audio actions which are already present.

ToDo: One of the rare classes which are very bad documented. We need to add code comments
ASAP

Change-Id: I73bcfb6c60454de4d8494dfd846deee770022335
SystemUI: italian translation

Change-Id: Ia32ddb47b43ee61de53efdcdd1b5014bbefaa8d5
Framework: Quiet Hours System Sounds (1/2)

Change-Id: I52c79a9fec98b5c75f88fc644766e830d5f6148e
Merge pull request #2 from SlimRoms/kk4.4

Update