Quick Settings: Actually update resources, when asked

Failure to do so causes the quick settings tiles not to be updated to
reflect system locale changes. The tiles remains at the previous locale.

Patch set 2: Remove unnecessary casts.

Patch set 3: Remove one last cast, only possible now that
             http://review.cyanogenmod.org/29350 has been merged.

Change-Id: I42bf8208a2f82dd0f2441685df6a7af2a81b611b

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java