AssetRedirectionManager: Accept redirections only for whitelisted resource types

Change-Id: Idf1ea739a81719b6a196f0114c9fc3b7c7ff428c
SystemUI: Don't try to update the navbar if it doesn't exist

Fix crashes on theme change on devices with buttons

Change-Id: I117c0ae605f7caca7e0f0425b80645a985644630
merge changes from remotes/github/cm-10.1 into master