Settings: add development animation transition mode 0.75 and 0.25

Change-Id: Iaaeb3757ef9b3b97d66d929629e9035ab511f72a
Settings: Remove System updates

Since this has no use, it's better to
remove it.

Change-Id: I52e8284d9c9f8ac2e76da7cbacb6a0d5dd00a4ff
Merge "Settings: add development animation transition mode 0.75 and 0.25" into android-4.4
Merge "Settings: Remove System updates" into android-4.4
Merge remote-tracking branch 'upstream/android-4.4' into android-4.4