(WIP) WL-98 As a course instructor, auto-register (as well as auto enroll) a list of students into my course

@chrisndodge here are the changes related to WL-98 for your quick reivew. 
we have written the test cases but only one coverage is missing in our code.  
currently we did not check/test the code for quality.

In order to test this feature you need to set the flag: 
FEATURES['ALLOW_AUTOMATED_SIGNEDUPS'] = True
Shouldn't the file be closed after the read is complete? Or better yet, use "with" syntax so the file is always closed, even if an error occurs. https://docs.python.org/2/tutorial/inputoutput.html#reading-and-writing-files