SystemUI: Status bar clock - fixes

This commit fixes:

- no overlapping more from status bar icons on center clock.
  The width depending on what the user has setuped (date and clock) is exactly meassured now
- do not start animations if they are not needed
- reduce settings provider calls
- a bit cleanup

Change-Id: I7a37a6ae8f9bad0f265119af05dc20cf21cd6890
Fix battery % always showing at < 100%

Change-Id: I9ce697e824e1f85becfd0e53519d3ae36fc65758

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/BatteryMeterView.java
Battery text mode (1/2)

PS2: Make battery level more fit current solution
PS3: Fix displaing battery level inside the icon
PS6: Show battery level in status bar header when charging and percentage
     mode set to inside icon (it's replaced by charging icon)

Change-Id: I537c99827e78c796b4980ec7751e5f9b58a88251
Signed-off-by: kecinzer <kecinzer@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/BatteryMeterView.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java
[1/2] base: allow disabling volume adjust sound

Change-Id: I95893180865209d2aeaf4b3fa129a74df7523bbe
need this too

Change-Id: Ie9f6876dee3a398c2a4af82affd6eef3b6d03dab