[courses] update 2013/14
[tt] tweak to share `modules.json`
[deps] add d3.v3 library
[make] remove _coffee droppings
[reqs] first cut at requisites visualisation
[reqs] tweak layout
[reqs] track which rows/cols have been seen
[reqs] tidy up layout
[reqs] highlight `x depends-on y`
[research] add luland to phd students; typos