Delete weeks
Create sections
Migrate DB for sections
Create groups
Create teachers
Create rooms
Refactor courses
Add join tables between courses, users, rooms and teachers
Add updates, refactor users, wire things up
Annotate models
Add broken_name to courses, for "broken" courses
Remove users admin customizations
Use Time instead of dates, fill the student and user id
Update the schedule fetcher worker
Update the ics generation
Remove course schedule from views
Merge branch 'courses_refactor'
Update gems
Add to_s method to groups, rooms and teachers