Fix null pointer exception in PhoneWindowManager

mKeyguardDelegate is null and is causing fatal exception

Change-Id: Iae14b969b7ff9ab0003e615f2f82eaac65a77985
Show owner info creation if no owner is set for UserTile

Change-Id: I43575946023676a1b75b67e1ae1996a0a3a35b88
Show default profile name if no profile exists

Change-Id: I6b651d6b552ab3caf30102d289469eaf68f58a0e
UserTile : Check if profile has a photo

In the event that the profile doesn't have a photo, don't default to the
user's photo, instead show a default avatar.

Change-Id: I80de324ae1e151693cf3716bf87d39a16096ca12
SystemUI: Fix displaying of user photo.

If owner profile does not have a photo but any associated profile have it
then photo will not be displayed. This case was broken by 67735c4efc458534906b2fb4683300c6e84c809b.

Change-Id: Ied7b1f8a5998c18bffcfd8bd603b4aa35d705c80
SystemUI: fix calculating alpha for back button in landscape mode.

Change-Id: Iea7a2eed86d4b65d3772b95f613d1853c66a0158
Fix volume link