Add user email and eppn from $_SERVER variable to error-text email message
Add user email and eppn from $_SERVER variable to error-text email message

Also cleanup unused variable
Fixes tkt #921

charliemeyer/geni-portal,tcmitchell/geni-portal,tcmitchell/geni-portal,charliemeyer/geni-portal,charliemeyer/geni-portal,tcmitchell/geni-portal,tcmitchell/geni-portal,charliemeyer/geni-portal,tcmitchell/geni-portal,charliemeyer/geni-portal