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
I am doing a CSV upload feature on the instructor dashboard and was revisiting this code. According to this stack overflow post, your code depends on HTML 5 and will not work in older versions of IE.

http://stackoverflow.com/questions/166221/how-can-i-upload-files-asynchronously-with-jquery

@asadiqbal08 and @cdodge Are you aware of this? I am wondering if I should use jquery-file-upload instead (which is used in the Studio upload asset code).