Add function argument defaults.

This will cause the function to return a safe (false) value
rather than erroring.

lib/www/server/lib/organisations/access.js

@@ -7,7 +7,7 @@
  * @return `true` is user has access to `operation` through
  * a common organisation, `false` otherwise.
  */
-function access (userOrgs, projectOrgs, operation) {
+function access (userOrgs = {}, projectOrgs = {}, operation = undefined) {
 	// console.log("userOrgs", userOrgs);
 	// console.log("projectOrgs", projectOrgs);
 	// console.log("operation", operation);