Bug 20037: Switch single-column templates to Bootstrap grid: Serials

Bug 20037: Switch single-column templates to Bootstrap grid: Serials

This patch updates several single-column Serials module templates to
use the Bootstrap grid. In addition to grid changes, some templates have
been modified to include the footer with the correct popup parameter.

- serials\acqui-search.tt - Go to Serials -> New subscription. Click
  "Search for a vendor."

- serials\acqui-search-result.tt - Vendor search results

- serials\result.tt - Click "Search for record."

- serials\subscription-bib-search.tt - Catalog search results.

Each of these pages should look correct.

Signed-off-by: Claire Gravely <claire.gravely@bsz-bw.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>