fix READ_SETTINGS/WRITE_SETTINGS to be "dangerous"

(see http://www.fireeye.com/blog/technical/2014/04/occupy_your_icons_silently_on_android.html for an explanation why this is dangerous

Change-Id: I203cf418973b873a87eae24f1b39c8ef397e4e58
Merge "fix READ_SETTINGS/WRITE_SETTINGS to be "dangerous"" into cm-11.0