Bug 19950: Update popup window templates to use Bootstrap grid: Serials

Bug 19950: Update popup window templates to use Bootstrap grid: Serials

This patch updates the two serials templates to use the Bootstrap grid
instead of the YUI grid.

Apply the patch and go to Serials and locate an existing
subscription.

- Click the "Edit routing list" in the sidebar.
- Save the routing list, and click "Save and preview routing slip."
- The routing slip preview should look correct and buttons should work
  correctly.

- When viewing the details of a subscription, click the "Renew" button
  in the toolbar. The popup window should look correct.

Signed-off-by: Zoe Bennett <zoebennett1308@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>