Popup layer fix

See merge request !35

- /static/style.css
- /static/app.js

Adding pop up

See merge request !34

- /wiki/pages/engineering.html
- /wiki/pages/results.html
- /wiki/pages/contribution.html

- /wiki/pages/members.html
- /wiki/menu.html
- /wiki/pages/team.html

- /wiki/pages/contribution.html
- /wiki/pages/description.html
- /wiki/pages/engineering.html
- /wiki/pages/experiments.html
- /wiki/pages/design.html
- /wiki/pages/attributions.html
- /wiki/pages/home.html
- /wiki/pages/members.html
- /wiki/pages/model.html
- /wiki/pages/results.html
- /wiki/pages/safety.html
- /wiki/pages/sustainable.html

Last addition text FINALE

See merge request !33