Standardize placement of Teams/Communities

On profile pages, the placement of the teams/communities listings varied
based on whether the user was logged in or not. This standardizes the
location of those listings to the lower-left in the two-column display,
which you get when editing your profile, or when viewing the profile of
someone with a long statement. When viewing the profile of someone with
a short statement or no statement there is a single column and the
team/community listings are towards the top.
Merge pull request #1911 from gittip/community-placement

Standardize placement of Teams/Communities