implemented editing of task`s 'no index' field

frontend/src/routes/project/Kanban.svelte

@@ -128,7 +128,10 @@
     }
     .head,
     .user{
-        background: lime;
+        background: black;
+        border: 1px solid orange;
+        color: orange;
+        text-align: center;
     }
     .highlight{
         background: red;

frontend/src/routes/task/View.svelte

@@ -140,6 +140,10 @@
         if (update({show_closed:task.show_closed})) setTimeout(loadTask,50);
     }
 
+    function updateNoIndex(){
+        if (update({no_index:task.no_index})) setTimeout(loadTask,50);
+    }
+
     function updatePermission(user_id,permission){
         let members = {};
         members[user_id] = permission.code;
@@ -227,6 +231,15 @@
                 </label>
             </td>
         </tr>
+        <tr>
+            <td></td>
+            <td>
+                <label>
+                    <input type="checkbox" bind:checked={task.no_index} onchange={updateNoIndex} />
+                    {t('hide_on_index_page')}
+                </label>
+            </td>
+        </tr>
         <tr>
             <th>
                 {t('members')}