added upload and almost done download functionality
upload and download functionality for student assignments is working.
Merge branch 'master' of https://github.com/mtarsel/dream-girlz
got upload/download working
Conflicts:
	mooc/templates/course_info.html
	mooc/templates/student_portal/assignments.html
	student_portal/urls.py
	student_portal/views.py
Merge branch 'master' of https://github.com/mtarsel/dream-girlz
added projects and made submission type a choice in assignment.
Conflicts:
	mooc/templates/course_info.html
	student_portal/views.py