SystemUI: italian translation

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

Change-Id: I52c79a9fec98b5c75f88fc644766e830d5f6148e
Merge remote-tracking branch 'upstream/kk4.4' into kk4.4-mo4