fb: less notifications sound (1/2)

add back the 4.3 feature like it was.
User can setup how often notification sound
for an app comes trough so that
it does not annoy to much

Change-Id: I3d7b2ef2e2ff99b7c23880626e0268ec4c5d8543
Frameworks: Add per app controls for LP keyguard notifications (1/2)

Nice done by google but the UX is a problem especially for ppl who are using a lot apps and just want
to see from important apps the notifications on the lockscreen.

This commit adds the ability to

- enable/disable per app the keyguard notification at all
- enable/disable per app ongoing notifications on the keyguard

We handle this over the app policy conf file like the other per app notification options.

Change-Id: I3e4641c3413ca0a8920b1680ca5f01f6eb4d0225
Fix FC on clear data in recents

Change-Id: I605ccb2104ab01439cc3c4c3c12c21629092707e

Conflicts:
	packages/SystemUI/AndroidManifest.xml
SystemUI: fix H+ data icon showing when wifi is connected