fixes #4673 - make default sort order descending on count columns

fixes #4256 - makes columns sortable in the UI

fixes #812 - new permissions model, user group role and nest support, role filters for better granularity

• Daniel Lobato <elobatocs@gmail.com>
• Joseph Magen <jmagen@redhat.com>
• Tom McKay <thomasmckay@redhat.com>
• Greg Sutcliffe <gsutclif@redhat.com>...

fixes #3912 - add inheritance for locations / organizations

fixes #3920 - prevent 500 ScopedSearch errors on the API, raise UI errors correctly

fixes #3516 - resource names (inc. domains) are now being parametrized when used to construct urls

refs #3254 - Using the two-pane layout in some pages.

fixes #2404 - prevents 404 when updating invalid name used as id

Fixes #2615 - failed to save host group

If there was current organization selected, organizations got doubled
which prevented save. Fixed and added test for this part.

Feature #2368 - form helpers, exceptions and fixes