Refining addUsersFromList.py to work with sample class lists
Refining addUsersFromList.py to work with sample class lists

* Changes made after running the script with files from Dodds which have more
  information than is needed to create users
* CSV file has to be read into the script in "universal" mode
* Added user inputs. Now the user can:
    * Adjust how many lines to ignore at the top of the file
    * Specify the indices for the name and email columns
* Added a block to print one user entry before actually any users. This is
  meant to safeguard against the case that the column indices are not correct
  and give the user the chance to abort
* Added email to printed output
* Still need to make the script output a file in addition to the printed info

noellekimiko/HMC-Grader,noellekimiko/HMC-Grader,noellekimiko/HMC-Grader,noellekimiko/HMC-Grader,noellekimiko/HMC-Grader,CSGreater-Developers/HMC-Grader,CSGreater-Developers/HMC-Grader,CSGreater-Developers/HMC-Grader,noellekimiko/HMC-Grader,CSGreater-Developers/HMC-Grader,CSGreater-Developers/HMC-Grader