Currently Select2 is set to add an option to the top of the dropdown list matching the users search, even if that is not one of the actual results from the API calls.

e.g. User can type "xyvvdsg" and that will be an option they can select.

• This breaks depicts form submission on the Participate page.
• When a manager adds a category to the campaign in this manner, there is a server error when you try and Participate as it can't find any category data (e.g.