The introduction should these things:
- Describe the way feudal is operating
- Force a decision between deployments per-server or per-vo
- Explain where the user can delete the account / manage ssh keys
- Prompt the user for ssh keys if there were none provided
Obiviously this introduction should only be shown once. We might want to put the resulting data (decision, preferences) into db, so we don't show the introduction multiple times if the user e.g. switches the browser.