Bug 19128 - XSS - patron-attr-types.tt, authorised_values.tt and categories.tt

Bug 19128 - XSS - patron-attr-types.tt, authorised_values.tt and categories.tt

Preparation:
- Add a branch with script in the branch name
- Add a patron category with script in the category name
- Add a new authorised value cateogory with script
- Add a new authroised value for this category with script
  in all possible fields

- Test editing patron categories
- Test editing patron attribute types
- Test viewing and editing authorised values

Verify that with this script there is no more script executed
and everything works fine.

Signed-off-by: Amit Gupta <amit.gupta@informaticsglobal.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Mason James <mtj@kohaaloha.com>