Integrate spam feature into call logs.

+ Add block and report spam actions.
+ Show spam icon and label for call log item.
+ Add stableIds for CallLogAdapter to improve performance(reuse same
viewItem to minimize update work).
* Fix funky UI of call log.

Change-Id: I6144d70b6a8e38061e1447d0d01910d53026d1db
Fix: 27295728
Fix: 26907466