Adjusted the setup page on the wiki to give more details about flashing new firmware onto the Crazyflie

Moved CF firmware build success pic from the wiki folder to the firmware folder where the readme files that needs this pic is

Adjusted GUI so that all display boxes are checked, and so that the scaling is applied to a CF when it is added (push_back) into the crazyflies_vector

Demo controller back into Master (this branch was used for developing nicer GUI and YAML parameter features for giving demonstrations of the system)

See merge request D-FaLL/PandS-System/D-FaLL-System!7

Merge branch 'demo_controller' of https://gitlab.ethz.ch/D-FaLL/PandS-System/D-FaLL-System into demo_controller

Started on making the Parameter Service more generic, compiled and tested, still needs full implementaiton

System prepared to start developing MPC controller. Included estimation part and crazyflie_angle_mode part. Need to clean a bit and test it in the real system, but it should work