Bug 30774: Typo: i %sEdit %sReserve %s

Bug 30774: Typo: i %sEdit %sReserve %s

This patch removes an out of place "i" and replaces it with a space. The
patch also removes obsolete CDATA markers in the page's JavaScript.

To test, apply the patch and go to Course reserves.

- Create a course if necessary, then view the details of your course.
- Click the "Add reserves" button.
- Enter a barcode or biblionumber.
- On the next page, the heading "Reserve [title] for [course]" should
  look correct, with no extra "i" at the beginning of the line.

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>