Issue title: Favorites count is off by one
 Issue body: The favorites count is off by plus one.  Noticed when I had a count of two showing on the Activity page link, then selected favorites page, only one object is displayed  Deleted that object, count went to 1 and no object is displayed on favorites page.

 Comments: 
 Comment 0: When I opened this issue, I could reproduce on two different nodes at that time. 

My user on e14n node appears to be functioning correctly for favs count atm.  Still see Fav count of 1 with no object listed on the favs page of pump.jpope.org/aha, though.

 Comment 1: Since many code updates, I revisited this issue. Only an issue on pump.jpope.org/aha at this time.  Was a note (hidden at the web), I was able to unlike via desktop client. It is not an issue now, and cannot reproduce. Closing.

{'source': 'GithubIssues', 'repo_name_with_owner': 'pump-io/pump.io', 'issue_id': 14264276, 'repo_stars': 2129.0}