CLONE - In a glossary activity, students can add entries including attaching files

1. Login as a student and access a glossary.
2. Add a new entry, completing the various fields and click the 'Save changes' button.
3. Try editing the entry and attach a file.
4. Check that the entry displays a link to the attached file
5. Try editing the entry again and embed a media file
6. Check that the embedded media file is displayed inline.
7. Try deleting the entry.