[gen] Calendar: bugfix; wrapper.appyUser returns the admin if the user is 'System Processes', the virtual user that runs when Zope is starting.

gen/installer.py

@@ -414,9 +414,9 @@ class ZopeInstaller:
         self.enableUserTracking()
         self.configureSessions()
         self.installBaseObjects()
-        self.installCatalog()
         # The following line cleans and rebuilds the catalog entirely.
         #self.app.config.appy().refreshCatalog()
+        self.installCatalog()
         self.installTool()
         self.installUi()
         # Perform migrations if required