message: Fix bleeding field on the "Ddit file" commit form
diff: .rgh-monospace-textareas #merge_title_field,
  .rgh-monospace-textareas #commit-summary-input {
  width: calc(72ch + 18px);
  + max-width: 100%;
  }
  .rgh-monospace-textareas #merge_title_field,
  