Survey must gather @pdx.edu email

[DavidWhitlock]

Currently, the Survey program asks the student what email address they'd like to use for the course. However, we have discovered that GMail will no longer accept emails sent from the CAT's SMTP server. However, using an @pdx.edu email still works.

So, I need to change the Survey program to ask for the student's @pdx.edu email address.