Deletion of course role should generate an alert

[Beth Willis]

3.10.4

In Course Reserves, a user may add new course roles to augment the default roles: instructor, teaching assistant, student. Roles may be assigned to individuals associated with the specified course. Roles may be set to be OPAC viewable. A role may be deleted, even if it has been assigned to one or more users. This is problematic, especially since the names of users with OPAC viewable roles are searchable in the catalog. At the very least, a visible warning should display if a user attempts to delete a course role that has been assigned to a user. Or, perhaps, deletion should not be allowed for any role that is associated with a user.

Steps to recreate:
--From Local Administration, select the Course Reserves List
--Select the Course Roles tab
--Enter the name of the new course role and save it
--Go back to the Course List
--Select a course
--Select the Course Users tab
--Search for a user/add a user barcode
--Choose the new course role from the dropdown
--Select Add User
--Return to the Course List
--Select the Course Roles tab
--Select the role you just added and choose Delete selected from the Actions menu
--Note that the role is deleted with no alert