Bug 19641: (follow-up) Correct popup templates

Bug 19641: (follow-up) Correct popup templates

This patch corrects the footer include for two patron-related popup
windows. popup-bottom.inc should be considered obsolete, and
"'intranet-bottom.inc' popup_window=1" used in its place.

To test you must have more than one adult-type patron category defined.

- Locate and view a child-type patron record.
- From the "More" menu in the toolbar, choose "Update child to adult
  patron."
  - The popup window which appears should look correct and work
    correctly.
- Add a new patron and enter the first and last names of an existing
  patron.
  - When Koha asks to confirm a possible duplicate record, click the
    "View existing record" link. The popup which is triggered should
    look correct.

Signed-off-by: Zoe Bennett <zoebennett1308@gmail.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>