Do not block home button if incoming call is a background call

The user want to navigate ahead if it is a call in background.
So we allow it.

Change-Id: If40b8abba05b600191bfc1403f197e624fd7a360

Signed-off-by: anerikg <anerikgames@gmail.com>

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
On-The-Spot: Add information on how to reset preferences

Info is added to the main On-The-Spot preference dialog.
(As suggested by +Carlo Savignano)

PS 2:
* delete unneeded code

PS 3:
(https://dl.dropboxusercontent.com/u/90317107/on_the_spot_pref_helper.png)
* Unclutter OTS Dialog

Change-Id: Iaf4f67e4b03babd1d6a604c2524781a748dd8025
Signed-off-by: kajuten <julian.kaltenhofer@gmail.com>
Allow translucent navigation bar in landscape mode.

Change-Id: I5388f3f8a34533624619714bacfba52f95fc6d85