Migrating to the new JHipster website

[jdubois]

Hello! We've been working on doing a new re-design of the main JHipster website, and we would love to include you!

The discussion is at https://github.com/jhipster/jhipster.github.io/pull/1357

Would like to continue working on the translation? And the old design should continue to work, but it would be better to migrate, are you interested in this?

For your information, I'm doing a similar message to the Japanese translation team.