message: Add rows and columns fields to Insert Field menu in tab title editor.
diff: @@ -150,6 +150,12 @@ class EditTabTitleWidget {
  <div
  class="insert_field_menu_item"
  v-on:click="onInsertFieldClick('term:title')">Title - \${term:title}</div>
  + <div
  + class="insert_field_menu_item"
  + v-on:click="onInsertFieldClick('term:rows')">Rows - \${term:rows}</div>
  + <div
  + class="insert_field_menu_item"
  + v-on:click="onInsertFieldClick('term:columns')">Columns - \${term:columns}</div>
  </et-contextmenu>
  <et-contextmenu ref="insertIconMenu">
  