added a check for the user they link to to not overwrite their guid value if one exists
added a check for the user they link to to not overwrite their guid value if one exists


PowerToChange/pat,PowerToChange/pat,PowerToChange/pat,andrewroth/project_application_tool,andrewroth/project_application_tool,PowerToChange/pat,andrewroth/project_application_tool,PowerToChange/pat