* Add feature check that allows users to use aggregates. Used so that
  not all users see the FE nodes. The same feature checks are used on
  the resource availability page.

* Turn cluster selector on.

* Mess with ordering, since Emulab is not a federate in Powder,
  everything else is, and we want Emulab first and Cloudlab Utah second,
  and everything else after that. Silly, but I know this will change so
  using brute force approach for now.