Fix option parsing issue

Author: Erik Loyer

system/application/views/widgets/edit/jquery.content_selector_bootstrap.js

@@ -2810,9 +2810,10 @@ isMac = navigator.userAgent.indexOf('Mac OS X') != -1;
 				var type_display_name = 'Comments';
 			} else if (opts.types[t] == 'users') {
 				var type_display_name = 'Users';
-			} else {
+			} else if  (scalarapi.model.scalarTypes[opts.types[t]]) {
 				var type_display_name = scalarapi.model.scalarTypes[opts.types[t]].plural;
-				type_display_name = type_display_name.charAt(0).toUpperCase() + type_display_name.slice(1);
+			} else {
+				var type_display_name = opts.types[t].charAt(0).toUpperCase() + opts.types[t].slice(1);
 			}
 
 			$type_selector.append('<option value="' + opts.types[t] + '">' + type_display_name + '</option>');