Settings: Add heads up blacklist options. (2/2)

Change-Id: I13d849b49bee6f516b591625c2ea2e69dff12885
Merge "Settings: Add heads up blacklist options. (2/2)" into cm-11.0
[2/2] Profile: Remove screen lock mode
[2/2] Profile: Screen timeout
[2/2] Battery light: Add 100% charged level
[2/2] Buttons: Switch to last app
[2/2] Global actions: Mobile data
[2/2] Global actions: Wifi
[2/2] Quick pulldown: center
[2/2] Smart pulldown
[2/2] Volume panel timeout
[2/2] Low battery warning policy
[2/2] Recent apps: Clear all button: Location
[2/2] Recent apps: RAM bar
[2/2] Network traffic indicator
[2/2] Floating window
[2/2] Lockscreen notifications
[2/2] Hover