Telephony: Incoming Call in Background (2/3)

Patch ported from 4.2 which was done by our lovely HCP. A
very popular one so we bring it back and adapt it to 4.4

Allows user to set that Incoming Call UI will remain in background
if screen is on. Instead, a notification is added to StatusBar, which
can be used to bring up the Incoming Call UI. Ringtone and vibration
still occur as per system settings.

This has the same effect as apps marked as "immersive". It prevents
the incoming call from backgrounding the current activity.

Change-Id: If3b8debf80c6b66343cf4257f87d8b70d727c1f6
PS: reorder settings a bit
TRDS:[Telephony] Dark Dialer (2/2)

inverts Call Settings from Dialer

Change-Id: I3ca081fde36eb16f014f648ed3d4144a496944f7
[4/4] Telephony: Smart Phone Call

Put on your ear, and this will automatically call current number in message or dialer

Change-Id: Ib7ae9b73af82b809aa782baf0b90e0c6cd4fc04e

Patchset: 1
https://gerrit.omnirom.org/#/c/6317/

Conflicts:
	res/values/cr_strings.xml
	res/xml/call_feature_setting.xml
	src/com/android/phone/CallFeaturesSetting.java