Bug 19682: Move JS to the footer: Two patron-related tools

Bug 19682: Move JS to the footer: Two patron-related tools

This patch modifies two patron-related tools templates in the staff
client so that JavaScript is included in the footer instead of the
header.

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

  - Import patrons
  - Upload patron images

Signed-off-by: Claire Gravely <claire.gravely@bsz-bw.de>
Edit for QA: Fixed datepickers on import patron form

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>