update workshops sections

Menu page for the workshops (about - propositions - archive),
documentation, pictures etc.
See: fbsp.net/workshop
Main page’s splash visuals as a menu

Add visuals to redirect to the main sections: press release, workshops,
pictures, inscription newsletter
Press release page

+ pdf version!
Pictures-archive (hack) + PUBLICATION LAUNCH docs + order

(problem with the new version of meteor, that fucked it all with the
templates: so we downgraded but some files bugged… to be fixed)
Updates, page events etc
WORKSHOP PLATFORM (first steps)

Still need to upgade and then fix the templates issues