remove defunct sites from list
Merge pull request #477 from amwelles/patch-1

remove defunct sites from list
Merge branch 'master' of https://github.com/radar/forem
Added topics that need moderation.

These were found in the controller, but were not
displayed in this view.  Now they are listed as well.
Switched from form view to list of anchors.

Easier to read.
Created tests for topic moderation view.