* k8s: support email configuration
support sending reset password email
fix for #32
* fastapi users: update to latest (8.1.2)
send verification email upon registration
* update to latest fastapi-users(8.1.2), refactor to use UserManager class
ensure verification e-mail sent upon registration, w/o requiring separate apicall
fixes#32
* add email options to default chart/values.yaml
* separate usermanager init from fastapi users init, fix for sending invite emails
- sending emai for validation + invites, configured via env vars
- inviting new users to join an existing archive
- /crawldone webhook to track verify crawl id (next: store crawl complete entry)
