base: cleanup duplicate sound files

http://jira.omnirom.org/browse/OMNI-56
http://jira.omnirom.org/browse/OMNI-262

Change-Id: I42b39ed18864abbb5fddcd099446d766e1961439
[1/2] Add battery level around unlock ring

PS2:
added missing change in KeyguardSelectorView.java

Change-Id: Ia4dbc2335657c096c34349ec67c4adfec0aeb91b
Signed-off-by: anerik <anerikgames@gmail.com>

Conflicts:
	packages/Keyguard/src/com/android/keyguard/KeyguardSelectorView.java