Corrected small spelling errors in the FAQ wiki, in the entry about getting Vicon data of another object

Update Flying Agent Client and wiki for how to easily get the data of another object recognised by Vicon

Updated wiki and install folders for the change from pps_ws to dfall_ws, and from d_fall_pps to dfall_pkg

Corrected the variable name mis-match for the FAQ about getting data from Vicon. Replace (almost) all instances of custom controller with student controller