Resolve "Access Denied exception on returning after enroll"

What does this mr do?

After a student enrolled for a course edition, going back leads to an Access Denied error. This should not be the case, instead it should be that the student is informed that they are already enrolled for the edition or they are redirected to the catalog of courses.

Actions taken to fix bug

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made and the bug I fixed.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide.

closes #107 (closed)

added bug-bounty priolow statusdoing typebug labels

assigned to @cchen9

added 1 commit

• 1a189177 - Error on return after enrolling

Compare with previous version

marked the checklist item I have added a changelog entry to reflect the significant changes I made and the bug I fixed. as completed

marked the checklist item I have updated the documentation accordingly. as completed

added 1 commit

• 834393f8 - Update documentation

Compare with previous version

marked the checklist item I adhere to the style guide. as completed

marked the checklist item A test was created to test the bug. as completed

added 1 commit

• 05647b39 - Add test for issue 107

Compare with previous version

marked this merge request as ready

added 1 commit

• eb0d42cb - Update tests

Compare with previous version

added 15 commits

• eb0d42cb...fc1dea8e - 11 commits from branch development
• bf2c0ce5 - Error on return after enrolling
• 4b33efc2 - Update documentation
• 63bdcf7f - Add test for issue 107
• 7dc8dd5f - Update tests

Compare with previous version

added 6 commits

• 1a189177 - Error on return after enrolling
• 834393f8 - Update documentation
• 05647b39 - Add test for issue 107
• eb0d42cb - Update tests
• 2093db79 - Make sure admins can enrol for editions
• f32f16e9 - Make sure admins can enrol for editions

Compare with previous version

resolved all threads

changed the description

approved this merge request

started a merge train

merged

mentioned in commit 16a80977

unassigned @cchen9