Themes: Whitelist animations

Change-Id: I981a8e4741cf03d8649bc4828e597d1a7035e080
Themes: Find wp asset when APK has dir entries

Some APKs are compiled with folders included as zip entries in the APK. This was causing
lockscreen wp to not correctly be set.

Change-Id: I9eca7878b29e3cfcb43abc4a9dab084d9c200b83

Conflicts:
	core/java/android/content/pm/ThemeUtils.java
	packages/WallpaperCropper/src/com/android/wallpapercropper/LockWallpaperPickerActivity.java
	packages/WallpaperCropper/src/com/android/wallpapercropper/Utilities.java
	packages/WallpaperCropper/src/com/android/wallpapercropper/WallpaperCropActivity.java