Themes: uninstallThemeForAllApps shouldn't check if map is empty if it's null

Potential NPE introduced in ec2200878706735cdd2caf4d934d988296998e85

Change-Id: I6d1ec165957c2be63086a18af2236e46978e9c8a
HALO: change holo blue to holo grey matching new drawables

Change-Id: Ib62b975cee90e009ce3ca149333e9b4ea27445c4

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/halo/Halo.java
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_frameworks_base into android-4.4