Using a search category with an empty input no longer uses the previously searched for query
Removed old unused search view code
Merge pull request #594 from hatched/remove-old-search

Removed old unused search view code

A while ago we rewrote how the search view was rendered but this code was left in.
Merge pull request #593 from hatched/search-filter-1375123

Using a search category with an empty input no longer uses the previously searched for query

Fixes bug https://bugs.launchpad.net/juju-gui/+bug/1375123
Document the containers feature flag.
Merge pull request #596 from frankban/doc-process-demo

Document the containers feature flag.