Bug 35419: Update page title for bookings

Bug 35419: Update page title for bookings

This patch updates the structure of the Bookings list page so that the
title can be better translated.

To test, apply the patch and locate a bibliographic record in the
staff interface catalog.

- View the detail page.
- If you don't see a "Place booking" button in the toolbar,
  click "Items" in the sidebar menu.
  - Locate the "Priority" heading, and change the "Bookable" setting to
    "Yes."
- Click the "Bookings" menu item in the left-hand sidebar.
- Check that the page title looks correct and consistent with
  breadcrumbs.

Signed-off-by: Barbara Johnson <barbara.johnson@bedfordtx.gov>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>