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

Change-Id: I54c07211dc121117543ccb8a4799efa491e5a469

Conflicts:
	src/com/android/phone/CallFeaturesSetting.java

Conflicts:
	src/com/android/phone/CallFeaturesSetting.java
[2/3] Flip to Mute/Reject Call
Call Settings - add menu entry

PS:
- fix not sticking entry

PS:
- correct idention from the whole xml file

PS:
- add a personal settings category to have the settings better sorted and splitted