Replace filter popup with a filter bar using material design (filter chips)

[whesse]

The filter popup will be replaced with an always-visible filter bar at the top, using material design filter chips.

There will be choice chips for "all results", "active failures", and "unapproved active failures".
There will be a text entry field "filter on", and test names, configuration names, and configuration group names will have autocomplete popup, and will become filter chips with remove ("X") button when chosen.

First step:
Create the filter bar, and display the active filters from the URL as chips in the filter bar. Enable the "X" buttons on the filter chips.

Next step:
Add text entry field, and autocomplete configuration groups and configuration names. Test names will not be autocompleted, but chosen when "enter" is hit.

Next step:
Remove filter popup.

Next step:
Add test name autocomplete data to a service, cache suite and subdirectory names in the app, autocomplete by path component. Do not allow partial test names yet.