Merge pull request #1236 from symonbaikov/feat/no-member-filter

Add filter for cards without members ("No member" filter)

Conflicted with the negative label filter, which had added its own field to
the board model next to this one. Both stay; they filter on different things.

client/src/components/boards/BoardActions/Filters.jsx

@@ -162,6 +162,14 @@ const Filters = React.memo(() => {
 
   const isSearchActive = search || isSearchFocused;
 
+  const handleNoMemberClick = useCallback(() => {
+    if (board.filterNoMember) {
+      dispatch(entryActions.removeNoMemberFromFilterInCurrentBoard());
+    } else {
+      dispatch(entryActions.setNoMemberToFilterInCurrentBoard());
+    }
+  }, [dispatch, board.filterNoMember]);
+
   return (
     <>
       <span className={styles.filter}>
@@ -176,6 +184,13 @@ const Filters = React.memo(() => {
             {userIds.length === 0 && <span className={styles.filterLabel}>{t('common.all')}</span>}
           </button>
         </BoardMembershipsPopup>
+        <button
+          type="button"
+          className={classNames(styles.filterButton, styles.filterLabel)}
+          onClick={handleNoMemberClick}
+        >
+          {t('common.noMember')}
+        </button>
         {userIds.length === 0 && withCurrentUserSelector && (
           <Tooltip content={t('action.filterByCurrentUser')}>
             <button type="button" className={styles.filterButton} onClick={handleCurrentUserSelect}>