message: recompute numPages on numItemsPerPage update
diff: @@ -2506,6 +2506,9 @@ void MainWindow::buildWindowTransformEditor()
  if (ImGui::Selectable(numItemsOpt[i], selected)) {
  numItemsInd = i;
  numItemsPerPage = std::atoi(numItemsOpt[numItemsInd]);
  + numPages = results.size() / numItemsPerPage;
  + numPages += results.size() % numItemsPerPage == 0 ? 0 : 1;
  + paginateLabel = "of " + std::to_string(numPages) + "##currentPage";
  }
  if (selected)
  ImGui::SetItemDefaultFocus();
  