Initial fixes

1. move everything one level up from the folder dosie.
2. Remove the header logic from the controller. We don't need security in this moment.
3. Change the paths such that we can test everything without login. Ex. add professor as path variable whenever needed.
4. Remove the model classes that are not used (ex. TeacherCourses and StudentCourses)
5. Add sql script to initialize data for testing.