app_module loader: more comments; less complex error reporting; coding style
userman auth permissions inside Class: '->' instead of '.'

i.e.:
-               ,'App.view.Window.tools.refresh'// developer's stuff
+               ,'App.view.Window->tools.refresh'// developer's stuff

This is a preparation for further auth/rbac changes, where Class file
names will have no such '->' sequence of chars as Class names have.