This commit fixes a number of small issues with
the membership widget.

First (Fixes #418) was kind of the source of a lot of the other issues. This widget behaved differently when on a user hub vs a group hub. On the group hub it showed who was a member of that hub. On a User hub it showed what hubs the hub was a member of. In this commit, the widget just focuses on showing who is a member of the hub. Of course, on a user hub there will
be only one member, the user.

Fix #417 -- Previously, the label that changed from member to owner if a member was an owner did not work. All users were listed as members only. This commit fixes this

Fix #416 -- Previously the links to users listed in the widget were not showing or working. This was because the widget was using member.name rather than member.username. This is now fixed.

Fix #415 -- Previously the title of the widget was "hubs". This has now been changed to "Members"

Fix #414 -- Previously when trying to add the Membership widget to a hub, it was listed in the list of widgets as "Hubs" it is now listed as "Memberships"

Fix #357 -- Previously the links in the Memberships widget used hard links rather than url_for. this is now fixed.

Additionally, the avatars on the view more modal in this widget were extremly stretched vertically. This commit fixes that issue too.

Signed-off-by: Ryan Lerch rlerch@redhat.com