TRDS:[Telephony] Dark Dialer (2/2)

inverts Call Settings from Dialer

Change-Id: I3ca081fde36eb16f014f648ed3d4144a496944f7
White emergency dialer

Change-Id: I3c4e54d1e6a5f008bac1d32314ca53ec33ed2277
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.

PS: reorder settings a bit

Change-Id: I159bd817ebcc39a0733f9433feb29b310adbc2aa