revert adb icon to kitkat

add adb easter egg

Change-Id: I9c1305ec5a0d4b1166b3fe4ba2877923e797e3c3
change default wallpaper to optimized kitkat version

optimized with jpegoptim --strip-all -m70 from about 2MB to 66KB

Change-Id: Ice7f1e771d1e17d4498a464446dd107c76a0fcd9
Signed-off-by: Alexander Martinz <eviscerationls@gmail.com>