Finished updating the CMakeList so the GUI is compiled only when the necessary Qt packages are available. Also added comment to agent.launch file giving example of how to launch without the GUI

Minor fixes arising from the first practical class of Spring semester 2019. Mainly relating to loading of paramters on first run, and also the integrator of the default controller

The test motors controller is now integrated to the flying agent client. The Default controller has the z integrator turned on, and the setpoint smoothing was slightly changed

Finished implementing the Default controller (except for the integrator). Needs compiling and testing. (Also changed the ClientConfig.yaml to be FlyingAgentClientConfig.yaml)

Add bits and pieces to the Slying Agent client for checking availability and occulsion of mocap data. Needs compiling and teesting

Renamed launch files to begin with a lowercase letter to make it easier for typing into the command line

Convert all occurances of PPS Client to Flying Agenet Client. And adjusted all other occurances of PPS accordingly