Initial Dark Material Lollipop

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

Conflicts:
	core/res/res/drawable/ic_lock_power_reboot.xml
	core/res/res/drawable/ic_lock_power_screenshot.xml
	core/res/res/values/symbols.xml
	services/core/java/com/android/server/power/ShutdownThread.java

Change-Id: Ie5fcd5d6a5ca40f3d4828dfa59f4d62d80bb6c9c
Dark theme: fix black reboot icon

Change-Id: I5c973938aaca0871b0ee689a831809c15b739ec0