input data update

* fix some titles and lab names
add lab list to the main menu
add collaboration graphs
update template

* update program: add chairmen
* update lab list: add stats
update input data
draft of Word Cloud functionality
word cloud style update

+ inkscape png crop
session program update: add author index
add lab stats: nb of labs per paper
reorganize files and automate directory generation
amend collab graph
move logos in a subdirectory of data path
draft for parallel session navigation