Use new and save instead of create and save when creating new attendees

[Martin Lindblom]

As create is the equivalent of using new and save, we should use the latter. This removes an unnecessary call to the db, when we update the attendee with a new refnbr.

[Martin Lindblom]

Save new attendees with new and save instead of create and save

refs #22

→ <<cset 7a11b9c03f99>>

[Fredrik]

Resolved with pull request #17

[Fredrik]

Removing milestone: Första statisk sida (DL: 25/8) (automated comment)

[Fredrik]

Save new attendees with new and save instead of create and save

refs #22

→ <<cset e140deb71188>>

[Martin Lindblom]

Save new attendees with new and save instead of create and save

refs #22

→ <<cset 7a11b9c03f99>>