webui: allow to replace facet tabs with sidebar
basically implementation of #4625 but atm there is no time to properly
test #4625 in the whole UI, therefore, it will be limited only to
active/stage/preserved user search page.
Reviewed-By: David Kupka <dkupka@redhat.com>
Reviewed-By: Thierry Bordaz <tbordaz@redhat.com>