Revert "frameworks/base: Update quick launch shortcut icons/resources"

This reverts commit ee5cfca7961155ac887fd06c0674c9a7e31350ee.
frameworks/base: Update quick launch shortcut icons/resources

Update the existing icons and add "xxhdpi" versions created
from a vector template. This commit cleans also the resource
files a bit up.

Screenshot: http://goo.gl/6CrMYr

Change-Id: I45abee5cf13cd239eb5b4402019afac28d6d5952

Conflicts:
	core/java/com/android/internal/util/cm/NavigationRingConstants.java
	core/java/com/android/internal/util/cm/NavigationRingHelpers.java
	core/res/res/values/dimens.xml
	core/res/res/values/symbols.xml
	packages/SystemUI/src/com/android/systemui/cm/ActionTarget.java
SystemUI: fix up navigation cursor keyevent flags

Volume cursor controls use slightly different flags to keep the cursor
within the field. Match them in the SystemUI for consistent (and better)
behavior.

Change-Id: I56d597f111ec611b0ca24a10f30575401fa76d18
Signed-off-by: Roman Birg <roman@cyngn.com>
Themes: Style, boot animation, and wallpaper previews

Change-Id: I2b367bf5336c03f2a4972a05b68922065cd4a701