Add alpha layer to tab carousel on contact card

- Introduce CarouselTab class to handle the
alpha layer and touch interceptor
- Clicking anywhere on the tab will select that
tab
- Remove split style action bar on contact card
so favorites star will be in upper right corner

Bug: 5081735
Bug: 5042660

Change-Id: I54088b49c928297dbfc523752258ceaa97cce445