TTC suggestions and mandatory markers in instructor notes

[deniederhut]

The time spent on any particular major topic in a day's worth of lessons can vary by a factor of 4 from instructor to instructor, and some instructors choose not to cover certain topics at all. This causes problems when knowledge necessary for future days in the course are not covered, either due to purposive omission or time constraints. It may help to have a list of required topics to be covered at the top of each day, with suggested times to completion at the top of each topic.