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
Framework: Generic Blacklist support (4 of 5)

Change-Id: Id6c85c9a537713ec77d00deb7f7fe5a9150be2cd

Conflicts:
	core/java/android/provider/Settings.java
base: Add blacklist provider permission

Change-Id: I4febc2c0aa1a690d607b2a459e2d60d30ecf5abf
JIRA: CYAN-3727
Issue: https://jira.cyanogenmod.org/browse/CYAN-3727
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	core/res/res/values/cm_strings.xml
frameworks: add blacklist call logging (1/3)

Change-Id: Id3413a298ba1bdf2ecdcc256d02fda85c3221bb6
Signed-off-by: Roman Birg <roman@cyngn.com>
frameworks: fix Blacklist support for L (3/3)

Change-Id: Ide9847344dd1260cc4d8e4fa5c6b461ea7aa3ded
Signed-off-by: Roman Birg <roman@cyngn.com>
Navigtion bar height layout fix