base: fix the offscreen volume key fix

http://jira.omnirom.org/browse/OMNI-770

Change-Id: I418523a78de01905df30ba703979854e0983528f
base: cleanup duplicate alarm sounds

http://jira.omnirom.org/browse/OMNI-762

Alarm_Classic is the same as Cesium (updating meta-data)
Promethium had wrong title meta data

Change-Id: I8096a12d2690691ae5252e1ffc48184f0a2c9510
base: cleanup even more duplicate alarm sounds

Argon=Fermium
Hassium=Helium
Carbon=Neptunium
Neon=Nobellium
Oxygen=Cesium
Krypton=Plutonium
Platinum=Promethium

Change-Id: Ibba7bb265568cc3aa3a9468b2da87cdac0463726
merge changes from Omni 4.4 into local branch