known bugs:

- there is html-code in some plain text mails, because they use
  models.TYPE_CHOICES, which is in html, because it is mainly used for the
  website side of things.

- helptext by /intern email: "Bitte gib deine E-Mail-Adresse ein, damit dich
Wikimedia Deutschland bei Rückfragen oder für
die Zusage kontaktieren kann." maybe this this misleading?

other known problems:

- The DatePicker works only if you are logged in, which is mostly ok for /intern
  and there is no Date to insert at the moment in forms for externs.

missing features:

- every modell should store the date when the surveymail was actually send.