Added in the rest of the constructors, and removed the robotAgent from the current version of the simulation.

Things to add:
1.  Transducer connections
2.  Conveyor Agent -- turn the GUI conveyor on/off when necessary
3.  PopUpAgent -- transducer protocol for figuring out whether the popUp
is up/down, and updating the bool within the PopUpAgent
4.  Fix anything else not fixed from the previous messages.