A teacher can set whether glossary entries are always editable

1. Login as a teacher, update a glossary and set 'Edit always' to No.
2. Login as a student and add a glossary entry.
3. Check that the entry may be edited or deleted within the time limit.
4. Check that the edit and delete links no longer appear after the time limit has expired.

Note: The time limit is set by an administrator and is normally 30 minutes.