Bug 10309: (follow-up) Update for Bug 10856, improve shelf browser

Bug 10309: (follow-up) Update for Bug 10856, improve shelf browser

This patch updates this theme with the changes made in Bug 10856.
Because of the way JavaScript is loaded in the new theme, the JS in the
shelfbrowser include had to be moved to the opac-detail template.

Test plan from that bug:
- On a detail biblio page, click on a "Browse shelf" link.
- Play with the next and previous links.
- Deactivate Javascript (using NoScript for example) and check that you
  get the same behavior (but the page is reloaded).
- Launch the unit tests: prove t/db_dependent/ShelfBrowser.t

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Works well. No errors

Disabled JavaScript on Firefox (about:config, javascript.enable -> false)
Browse shelf works by reloading.
Unit test report success.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>