SystemUI: Fix signal cluster hiding data icon on data disabled.

 972a6e652 removed the zero'ing of the datatype icon, restore the
 original behavior.

Change-Id: I5794582673b13835d9264d7615d640308bf3fbe3
Themes: Fix memory corruption from closing asset before XMLTree

Change-Id: Ifa411c18d46f4bb6befa18405ce7daa04de13ccc
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0