Bug 20044: Switch single-column templates to Bootstrap grid: Cataloging

Bug 20044: Switch single-column templates to Bootstrap grid: Cataloging

This patch updates several cataloging module templates to use the
Bootstrap grid.

- cataloguing/addbooks.tt - Cataloging - The main page and the
  cataloging search results page should look correct.

- cataloguing/addbiblio.tt - Cataloging -> New record - The record edit
  page should look correct.

- cataloguing/merge.tt - Cataloging -> Search -> Select two records to
  merge. The merge reference selection page should look correct, as well
  as the source/destination selection page.

- cataloguing/moveitem.tt - Catalog -> Search -> View record -> Edit ->
  Attach item. The barcode submit form and confirmation screens 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: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>