Add administrator and remove guests from list of roles

Note: Most of these changes are covered extensively by unit tests Navigate to Site administration > Appearance > User tours Click to create a new tour Under the list of Filters, for role: Confirm that the Guest role is not present Confirm that the administrator is present in the list Confirm that the list is alphabetically sorted (Switch language to confirm again) Create a tour for a student with a pathmatch of /course/view.php% and add some steps As admin view a course Confirm that there is no tour for you As a student view the same course Confirm that you are shown the tour Edit the tour again and make it visible to both Administrators and Students As a student view the same course Confirm that there is no tour for you As a student view the same course Confirm that you are shown the tour