Add back in-call vibration features (2/2)

Add settings implementation.

Change-Id: I48d56f28cf1caf8ab783f693887b282d5a2d4a2b
Dialer: deblur fab_blue.png

One of my users is reporting this kind of problem
all around the dialer app...

Zoom in and we'll see the edge of button in
original picture is not clear. The new one is
much more smoother.

Change-Id: I92e48166abcaa22e7ad73f0859ade09bafa1b2bb