[FIX] bs5 update: Class 'row' removed from divs whose child items aren't grid components

The behavior of div.row changed in Bootstrap 5. Child objects display full-width unless they have grid classes, so use of div.row should be limited to use in a layout grid, not just to make a div with a bottom margin. This commit contains other misc. adjustments found in tpl files such as other form updates, missing labels, and minor string changes.