Support RTL in InCall call card.

+ Specify "START" text alignment for call state label and the
name.
+ Specify "END" text alignment for the elapsed time.
+ Make the elapsed time view expand to take the parent's width,
instead of the number and location label's parent view.
+ Switch elapsed time text alignment to START if the number and
label view is hidden.

Bug: 18716511
Change-Id: I6d2ef5fe8a4364d42fb0438541e00ecce3daeaab