PlumLabs/cultural — pull request #70 by edudepetris (2014-02-15 18:21:46+00:00)
Title: Add annul field to CoursesStudent and Refactoring

* **Add annul field to CoursesStudent**
- Add annul to table of course (show)
* **Refactoring**
- courses_helper
- create controller for courses_students