[change] Migrate from django-admin-autocomplete-filter to dalf #582#585

SAMurai-16 wants to merge 3 commits intoopenwisp:masteropenwisp/openwisp-utils:masterfrom

SAMurai-16:issues/582-migrate-autocomplete-filtersSAMurai-16/openwisp-utils:issues/582-migrate-autocomplete-filtersCopy head branch name to clipboard