custom bootanimation improvements

- custom boot animation picker disabled if boot animations are disabled,
    for consistency
- set custom boot animations to /data/local/bootanimation.zip so we don't
    overwrite the system one.
- allow users to clear their custom boot animation

Change-Id: Ibdedf6c3c6bb55312a9088d5849af8f826cdffad
Signed-off-by: Roman Birg <romanbirg@gmail.com>

 romanbb authored 9 days ago 1 parent 3684b9f commit fcb0f6764f6d50473f7e7f649d13cc87c2e635d2

 Changes to be committed:
	modified:   res/values/strings.xml
	modified:   src/com/raum/romcontrol/fragments/UserInterface.java