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

Setup-page's Vicon part is done. TODO:Network setup. includes some images for the wiki-page. Workflow for students has some starting points