Fix references to AvatarService.id

Review Request #8003 — Created Feb. 26, 2016 and submitted — Latest diff uploaded

Information

Djblets
release-0.10.x
1022d99...

Reviewers

In review, the id attribute of avatar services was changed to
avatar_service_id. This patch corrects all instances that were missed,
as well as fixing some unit tests that were missing an HTML class name
in the expected output.

  • Ran unit tests.
  • Tested this patch with Review Board.