Add history.js library
Update URL when filters are updated
Return comma-separated strings instead of arrays
Refactor filter method to use request dict
Correctly paginate using request.GET filter
Refactor key exists and not empty string check
Return filter dict with lists from filter
Do not store split search string in filter
Fix remaining merge conflict
Fix undefined variable errors
Make sure button click events propgate correctly
Set filter template dom from request filter
Add minified versions of history.js
Merge branch 'aktivitet-url-params'