Camera: Add shortcut to Gallery in CameraSwitcher

Adds shortcut to Gallery via Camera UI in switcher
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* Thanks to kwesley for images

Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>
Change-Id: Ibe3555248fc50b56876e8cd7f8282d6107bb1d6e

Conflicts:
	src/com/android/camera/CameraActivity.java