InCallActivity: consume back key on incoming call screen

Users will not be able to anything if the physical back key is
pressed on the incoming call screen (return to home screen with
nothing responding.)

Forward porting the key consumption from 4.3

Change-Id: Iea0734852bac7ca5a25e19ec9d9ee7c80dba6741
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: make navigation bar translucent + other fixes

* Make navigation bar translucent when available, minimizing thec bad
  effect of the black navigation bar.
* Complete change Ie76cbc53c176d94bfb2402bf50eae6161fbb2198, displaying
  the caller photo in complete full window size.
* Sync Msim layouts with normal layouts

Patchset 3: Use full translucent bars (status + navigation)
Patchset 4: Revert layouts
Patchset 5: Simplification, use transparent status bar during call
Patchset 6: Fix dialpad layout
Patchset 7: update translucency flags when hiding conference manager
Patchset 8: also make status bar translucent when dialpad is shown

Change-Id: I3a9e4e248f19b951dd6a127b6f63a0cd62047497
JIRA: CYAN-4048
Issue: https://jira.cyanogenmod.org/browse/CYAN-4048
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	res/layout-land/incall_screen.xml
	res/layout/incall_screen_msim.xml
	src/com/android/incallui/InCallActivity.java
Delete incall_screen_msim.xml
Make incoming call screen style configurable. (2/3)

Change-Id: I46db78c9b48fae52530b96789ec2721d51b7185a

Conflicts:
	src/com/android/incallui/CallButtonFragment.java
	src/com/android/incallui/InCallActivity.java