SystemUI: add Weather display to status bar header

Change-Id: Ic2fea861c36f405d8a0e64cc9224f47088ac6351
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:
	packages/SystemUI/res/values/cm_strings.xml

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarHeaderView.java
SystemUI: improve brightness slider behavior

Mimic the brightness slider behavior in the statusbar.
This adds logic to make the statusbar slider also work with automatic
brightness mode enabled and it will instead adjust the temporary automatic
brightness overrride.

Change-Id: I78814a785decc83df94844fcc2f489c8cbec2b65
Signed-off-by: Roman Birg <roman@cyngn.com>