How to reproduce
- connect to BO
- open parameters of the service to display/add projects
- in the parameters choose a category to display only this category
- connect to FO
- click on "Add a project"
- The list of project category is displayed with all the categories
- Expected behavior*
- The list of categories should display only the categories selected by the webmaster (it is possible to select more than one category in the service parameters)
- It should be mandatory to select one category
- It should not possible to let the list empty.