[1/2] InCall: Add a non-intrusive dialog for incoming calls

Change-Id: I7c8b5cc5138a5543be30579e99bd9989624e2abe

Conflicts:
	AndroidManifest.xml
	res/values/dimens.xml
	src/com/android/incallui/InCallPresenter.java
[3/3] InCallUI: allow disabling non intrusive incall ui

Change-Id: I86bd4b46f031004fa90f1d7936263f9dabcd3860

Conflicts:
	src/com/android/incallui/InCallPresenter.java
InCallUI: fix non intrusive incallui layout

- makes the decline/answer buttons evenly sized
- decrease font size of buttons to 13sp so the non-english button labels fit better

before: https://www.dropbox.com/s/g9mn72qhzq6wlbt/2014-01-01%2006.00.31.png
after:  https://www.dropbox.com/s/dfhmaliz6a21lk5/2014-01-01%2010.30.42.png

Change-Id: I88e0f0a1358595f2ce86dddcae2ab4d4e788fc1a

Conflicts:
	res/layout/card_call_incoming.xml
InCallUI: fix non-intrusive for RTL

http://jira.omnirom.org/browse/OMNI-522

Change-Id: Ib712ccc2c207e329bdfa4cf64d29f2aeb130f59b

Conflicts:
	res/layout/card_call_incoming.xml