Bug 19656: Move rotating collections templates JS to the footer

Bug 19656: Move rotating collections templates JS to the footer

This patch modifies the staff client's rotating collections templates so
that JavaScript is included in the footer instead of the header.

The patch moves JavaScript from each template and the rotating
collections toolbar into a single external JavaScript file.

To test, apply the patch and test the JavaScript-driven features of
each page: All button controls, DataTables functionality, form
validation, etc.

Signed-off-by: Claire Gravely <claire.gravely@bsz-bw.de>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>