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/drawable-hdpi/ic_navigation_ring_ime_switcher_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_ime_switcher_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_kill_task_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_kill_task_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_killtask_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_killtask_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_screenshot_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_screenshot_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_silent_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_silent_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_sound_on_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_sound_on_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_standby_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_standby_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_torch_off_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_torch_off_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_torch_on_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_torch_on_normal.png
	core/res/res/drawable-hdpi/ic_navigation_ring_vibrate_activated.png
	core/res/res/drawable-hdpi/ic_navigation_ring_vibrate_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_ime_switcher_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_ime_switcher_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_kill_task_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_kill_task_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_killtask_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_killtask_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_screenshot_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_screenshot_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_silent_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_silent_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_sound_on_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_sound_on_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_standby_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_standby_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_torch_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_torch_normal.png
	core/res/res/drawable-mdpi/ic_navigation_ring_vibrate_activated.png
	core/res/res/drawable-mdpi/ic_navigation_ring_vibrate_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_blank_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_ime_switcher_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_ime_switcher_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_kill_task_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_kill_task_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_killtask_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_killtask_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_screenshot_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_screenshot_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_silent_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_silent_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_sound_on_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_sound_on_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_standby_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_standby_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_torch_off_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_torch_off_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_torch_on_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_torch_on_normal.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_vibrate_activated.png
	core/res/res/drawable-xhdpi/ic_navigation_ring_vibrate_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_blank_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_ime_switcher_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_ime_switcher_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_kill_task_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_kill_task_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_screenshot_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_screenshot_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_silent_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_silent_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_sound_on_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_sound_on_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_standby_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_standby_normal.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_vibrate_activated.png
	core/res/res/drawable-xxhdpi/ic_navigation_ring_vibrate_normal.png
	core/res/res/drawable/ic_navigation_ring_killtask.xml
	core/res/res/drawable/ic_navigation_ring_lastapp.xml
	core/res/res/drawable/ic_navigation_ring_power.xml
	core/res/res/drawable/ic_navigation_ring_power_menu.xml
	core/res/res/drawable/ic_navigation_ring_standby.xml
	core/res/res/drawable/ic_navigation_ring_torch.xml
	core/res/res/drawable/ic_navigation_ring_torch_on.xml
	core/res/res/values/symbols.xml
	packages/SystemUI/src/com/android/systemui/cm/ActionTarget.java