Hi Marcus! I've seen you panel and it is a good start for a powerful backend.
I like very much the bootstrap panel (I was making my own panel in these days), but I don't like very much the way the admin panel was implemented.
Looking the code it seems that you have implemented 3 different modules:
- main
- menu
- users
I don't like this structure very much, in my idea it would be better to create a single module with admin template / user and more (eventually you could create a driver based interface for different user management modules).
I think it could be better to have a single module with a unique name, like "backendpro", and let other modules to extend it if they want to add some functionality.