[Infovis] Updated IEEE VIS publication visualization tools

We recently updated the VISLists (http://iilabgt.org/vislists/) and CiteVis (https://www.cc.gatech.edu/gvu/ii/citevis/) systems that communicate data about IEEE VIS and IEEE InfoVis papers, respectively. The systems now include data from IEEE VIS 2018, except for VISLists missing the '18 VAST conference-only papers which haven't been pushed to the IEEE DL yet. The data driving VISLists is from the vispubdata project (http://www.vispubdata.org) and the data driving CiteVis is hand-curated and available on its website.