Small modifications to the models.
Started using also the Joystick Logitech F310.
Just cleaned the simulink model structure.
Made small changes, moved here a new scene and now I will start to think about how to control multiple quadrotors.

I have to see if it is better to duplicate or adapt the position/attitude controllers.
Removed the slprj folder. Modified the simulink model introducing a function to switch the y and z axes. Before it was done for 1 robot now it can work for n robots.