InCallUI: Set Ticker to contact

Display contact/number/confrence
	in notification ticker.

PS2:
Implement Kufikugel's suggestion.
	Incoming call ticker only.

Change-Id: Ie89cceb67aecbf3dd15abd07dc35110f7fddc2f9
InCallUI: add decline and answer  incoming call action on notifications

Add decline and answer call action on notification if an call is incoming. Especially
usefull for call in background feature to have the ability to directly
decline or answer a incoming call. But as well usefull to decline/answer a second call
during one is incomming.

PS:
- found a better way for the answer button

PS:
- fix keep flip action alive
- fix collapse notification shade when answering call
- answer call before starting the UI to do not have
  shown the incall screen for a brief second

PS:
- fix wrong user on sending close system dialogs

Change-Id: I92d8f5a2de74f9877a61c4da4c3eaf2e25230895
TRDS: Dark InCallUI

PS2:
- moved into right folder

PS3:
- redirect colors of original layout xml

Change-Id: I5bcfeb692bc4653e240df7c47216826452ee7d47