Fix setting change observing.

The observer doesn't deal with keyguard related options only.

Change-Id: Ib185662f4f8ca7508be3dce10091b5132aa823e1
Mute aapt
Fix quick swipe
Change default animation scale
Global actions: Profile in keyguard
Profile: Don't change media volume when music is active
HeadsUp: Long press menu
White theme
[1/3] Bass boost: Center frequency
[1/3] Stereo widener
[1/2] Profile: Remove screen lock mode
[1/2] Profile: Screen timeout
[1/2] Battery light: Add 100% charged level
[1/2] Buttons: Switch to last app
[1/2] Quick pulldown: center
[1/2] Smart pulldown
[1/2] Volume panel timeout
[1/2] Global actions: Mobile data
[1/2] Global actions: Wifi
[1/2] NavBar: Enable with s-pen