Fixing the infinite 'Loading' Admin Users view bug.

The Admin Users panel was broken when we switched to more than just
public/closed states. This commit treats everything not open as
closed, which fixes the bug. We may want (as a seperate issue)
to differentiate between the close states.

Fixes #388
Merge pull request #389 from DavidEBest/devel-adminfix

Fixing the infinite 'Loading' Admin Users view bug.