fix: lower resolution
fix: don't step out of <main> width for calendar
refactor: remove useless comments
fix: glue footer to the bottom
fix: remove html5 warnings
fix: remove html5 warnings
fix: correct typos
fix: add media query to disable horizontal menu#2 on low resolution
feat: add content

- add partners logo
- complete agenda
- create random useless pages
- also, fix footer margin
- enhance index appearance
feat: add a redirection on main index.html