Fix some directory info not being present

app.rb

@@ -104,9 +104,9 @@ helpers do
             # create this user
             @user = User.create(
               username: session['cas']['user'],
-              email: info['mail'][0],
-              first_name: info['givenName'][0],
-              last_name: info['sn'][0],
+              email: info['mail'][0] rescue nil,
+              first_name: info['givenName'][0] rescue nil,
+              last_name: info['sn'][0] rescue nil,
               date_created: Time.now,
               creation_method: 'CAS',
               is_admin: false