IE8 compatibility
Merge pull request #29 from nmorel/ie8

IE8 compatibility
Update events.json
code
reverse order so it's simpler to add a new event on github UI
Update events.json
Update speakers.json
annonce build-battle
images
Update speakers.json
Optimisations images
diminution header 500px -> 300px
merged "Nicolas De Loof" and "Nicolas Deloof"
Update events.json
optim logo zenika
optim images header png->jpg (pas besoin de transparence)
optim images speakers format jpg et h=200px
optim images events format jpg@90% h=250px
Merge branch 'gh-pages' of https://github.com/BreizhJUG/www into gh-pages
Issue #30 : lien vers google maps