Toggle bug fixes

- battery info should be stored
- user/fav user should retain images after rotating
- new fast charge file reading impl
- bluetooth/wifiap logic improvements

Change-Id: I7646292b88f34cd3b1e23ba615d2c571ca22cb89
Signed-off-by: Roman Birg <romanbirg@gmail.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/toggles/FastChargeToggle.java
Toggles: cleanup class and quiet down logging

Change-Id: I39f1382ee2d340a2d2676aa85e6fbc6641bb3c61
Signed-off-by: Roman Birg <romanbirg@gmail.com>