message: Only unique labels are selectable, and seperate query for label
diff: @@ -99,7 +99,7 @@ const FilterToolbar_: React.FC<FilterToolbarProps & RouteComponentProps> = (prop
  const { name: nameFilter, labels: labelFilters, rowFiltersFromURL: selectedRowFilters } = (() => {
  const rowFiltersFromURL: string[] = [];
  const params = new URLSearchParams(location.search);
  - const q = params.get('q');
  + const q = params.get('label');
  const name = params.get('name');
  _.map(filterKeys, (f) => {
  const vals = params.get(f);
  @@ -120,9 +120,9 @@ const FilterToolbar_: React.FC<FilterToolbarProps & RouteComponentProps> = (prop
  const updateLabelFilter = (filterValues: string[]) => {
  if (filterValues.length > 0) {
  - setQueryArgument('q', filterValues.join(','));
  + setQueryArgument('label', filterValues.join(','));
  } else {
  - removeQueryArgument('q');
  + removeQueryArgument('label');
  }
  setInputText('');
  applyFilter(filterValues, FilterType.LABEL);
  @@ -251,7 +251,7 @@ const FilterToolbar_: React.FC<FilterToolbarProps & RouteComponentProps> = (prop
  <AutocompleteInput
  className="co-text-node"
  onSuggestionSelect={(selected) => {
  - updateLabelFilter([...labelFilters, selected]);
  + updateLabelFilter(_.uniq([...labelFilters, selected]));
  }}
  showSuggestions={FilterType.LABEL === filterType}
  textValue={inputText}
  