Use carrier presence when showing the video call icon.

- Removed some unused video assets.
- Added carrier_presence to the ContactLoader queries (this supports
load in the quick contacts view, as well as in the dialer search results).
- In search results (ContactListItemView), moved label before phone
number (per UX).

Bug: 20257833
Change-Id: I838dbf6c58939faab6d36f4afa70587b07f85f63