EditionsController adds a default state param of 'active'

This is to avoid selecting 'all' from the filter menu and not having anything selected presenting different results.

For: https://www.pivotaltracker.com/story/show/46734111
EditionsController adds a default world_location_ids param of 'all'

This is so the front end will highlight "All" world locations even if you didn't select one.

For: https://www.pivotaltracker.com/story/show/46734111
Tidy up admin edition filtering UI

1. make sure each filter option that is rendered as a form has hidden fields for the filter options that make sense (state, type, etc..)
2. use the @filter.options instead of params to query values (because we now inject some defaults)
3. highlight the 'world location ids' options if selected
Remove meaningless test for admin edition filter ui
Merge pull request #386 from alphagov/fix_admin_edition_filtering

Fix admin edition filtering

https://www.pivotaltracker.com/story/show/46734111