[2/3] Telephony: allow disabling non intrusive incall ui

Change-Id: I4eec37e8f9ec3a7e062b13deac54a844dc277a03

Conflicts:
	res/values/cm_strings.xml
TRDS:[Telephony] Dark Dialer (2/2)

inverts Call Settings from Dialer

Change-Id: I3ca081fde36eb16f014f648ed3d4144a496944f7