Switched to typeahead and removed select2
Added tablesorter, properly styled

--HG--
rename : css/bootstrap.min-16.css => css/bootstrap.css
Removed duplicate loading of moustrap
Added a tool to generate results.js from a bunch of files in a dir, based on regexp
Added shortcuts; now cases can be empty
Temporary fix for the case of missing exercises
Fixing a bug due to exercises that are not present

--HG--
rename : to_results.py => to_results
Preparing to merge