* ui: Controller dead code removal
This commit removes a little code that became 'dead' as a result of
previous PRs/commits
* Remove a little more from the settings Controller
* Remove CSS related to being able to set the dashboard_url in settings
* ui: Add predicate, comparator and necessary files for the search/sort
* Implement search and sort for upstream instance list
* ui: Tweak CSS so its all part of the component
* Remove the old proxy test attribute
wenincode