(2/2) SQUASHED Lockscreen notification and fixes for slim

All credits to David96 / AOSPA

Change-Id: Ie108fe487af9b926b1ed9f066597bb42d2726f51
[2/2] Settings: Wakelock Blocker

Change-Id: I0bfb8a47a2321091ff38c24acdb4dd25c9db0e22