Forward port "Add option to hide AlarmClock Icon in StatusBar"

From http://review.cyanogenmod.org/#/c/29106/

Change-Id: Ia4eb6ed32040eb5858dbb2d52f7e7773a0a46b0d
DeskClock: Move the strings from AlarmClock Icon hiding

* Move the strings from strings.xml to cm_strings.xml
* Forward port DE translation from 10.2

Change-Id: I2b6f5b46ec61ccaccfdeb428e2ac1b5b38766736
Merge branch 'CyanogenMod/cm-11.0'