Merge pull request #152 from appsembler/omar/intercom-500

RED-1930: Fix intercom 500 error with user.authenticated

cms/templates/widgets/tahoe-intercom.html

@@ -3,7 +3,7 @@
   <!-- Intercom widget -->
   <script>
       window.intercomSettings = {
-          % if user.is_authenticated():
+          % if user.is_authenticated:
             %if user.get_full_name():
               name: "${user.get_full_name() }", // Full name
             %endif