message: Reset plurals notebook to singular on item change
  Fixes
diff: @@ -703,8 +703,11 @@ void EditingArea::SetTextFocus()
  if (m_textTrans && m_textTrans->IsShown())
  m_textTrans->SetFocus();
  else if (!m_textTransPlural.empty())
  + {
  + m_pluralNotebook->SetSelection(0);
  m_textTransPlural[0]->SetFocus();
  }
  +}
  bool EditingArea::HasTextFocus()
  {
  @@ -771,6 +774,9 @@ void EditingArea::UpdateToTextCtrl(CatalogItemPtr item, int flags)
  {
  SetTranslationValue(m_textTransPlural[i], item->GetTranslation(i), flags);
  }
  +
  + if (flags & EditingArea::ItemChanged)
  + m_pluralNotebook->SetSelection(0);
  }
  else
  {
  