Added Education menu.
Changed class to course so python wouldn't go nuts.
Added courses to a location.

This also adds the 'add_course' and 'get_course_by_number' helper
functions.
Parse the courses available in this location.
Missing comma in map file.
A bunch more missing commas from the map file.
Extra comma in map file.
Adding Course class.
Add necessary imports.
Change a few 'class' instances to 'course'
Missing commas
Typo in adding options for CourseMenu
Change ClassMenu to CourseMenu in CourseMenu class.
Wrong title in CourseMenu
Limit the course options to courses the player is qualified to take.

Also, once the player has taken the course, do not show it as an option.
Make arguments required in display under CourseMenu
Add the correct command to self.commands in the Game class.
Change 'class_required' to 'course_required' for consistency.