ThemeChooser: Add missing up navigation

Change-Id: I801d61eb72ccdc31ca8093f9885f034e38707294
Don't rely on dimensions given in desc.txt

It is possible for a boot animation to have images that are not
the same dimensions as those given in the desc.txt.  For this
reason we should not rely on those dimensions when allocating
bitmaps.

Change-Id: Ic4996c419d542bdcfbec5ebf6df3c9d6364e5af6
CM11 Themes: Allow defining a custom default theme [3/3]

Change-Id: Ieed1f6c67972cd24f981df5bdb7095a1444f40c1
Merge "Don't rely on dimensions given in desc.txt" into cm-11.0
Merge "ThemeChooser: Add missing up navigation" into cm-11.0
Merge "CM11 Themes: Allow defining a custom default theme [3/3]" into cm-11.0