frameworks: Hope systemui improved battery life

See this:
http://image.thinkingbridge.org/keyguard.png

Remove KeyguardTestActivity

Change-Id: I3395d64abba87d5002bbc08af62c45dcc9e75015
Restore ProfileGroup notification override functionality

Also clean up a little.

JIRA: CYAN-3164
Change-Id: I9b71a225996315f517b59d2d6f4074175bbf2d64
storage: Don't list removed volumes in storage list

 * Don't tell apps that USB storage or empty SD slots are available for
   use. This fixes errors about trying to create dirs in vold as well
   as the relevant CTS cases.

Change-Id: Ic763d40c19b0bb9f7497cc1515baf1661d76e9ee
SystemUI: remove unused translations

Change-Id: I9a20dbbcad652a058049eb5b7f8b9726a38c11a2
Frameworks AppOps: fix allow/reject counting

Was missing from the original counters commit:
http://review.cyanogenmod.org/#/c/57352/

Change-Id: I9c180ff132077f21426a36f2ceb7d23a054d7ae4