Bug 5471 - Quotes in tags fail

Bug 5471 - Quotes in tags fail

This patch makes changes to the tag moderation template and JavaScript
to fix handling of tags with double or single quotes. This patch also
moves the tags moderation JavaScript out of the template and into a
separate JS file.

To test you should have multiple tags awaiting moderation, including
tags which contain double and single quotes.

- Go to Tools -> Tags.
- In the list of tags pending approval, test approving and rejecting
  tags, including those containing single or double quotes.
  - The state of the "Approve" or "Reject" buttons should correctly
    change according to the action you chose.
  - The label in the status column should update correctly.
- In the "Check lists" form, submitting approved, rejected, and
  unclassified terms should result in the correct message.

Signed-off-by: Lee Jamison <ldjamison@marywood.edu>
Works correctly based on test plan. Tested using single- and
double-quoted tags. Passes QA Tools.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>