RC: make animations faster by default

Having the Animation Duration at 50 makes the entire sytem feel
a bit sluggish.
Half it to make the system animations twice as fast.

Change-Id: I93f3a3921bf5a25465c06d7b128162776b7eb67a
Signed-off-by: Andrew Warfield <hiasant@gmail.com>
Merge "RC: make animations faster by default" into kitkat