Inform students of courses which have been previously offered under a different name/department

[g-luo]

• EL ENG 126: https://berkeleytime.com/grades/0-2418-all-all
• EECS 126: https://berkeleytime.com/grades/0-14673-all-all

[g-luo]

Might be worth giving users more control over the all semesters option or listing the semester's we're averaging for better transparency.