Fix bug in comparison to decide between a full three track card reader
and a single track card reader.
Merge branch 'master' of https://github.com/sc0v/trailerapp
Merge branch 'master' of https://github.com/sc0v/trailerapp
Merge branch 'master' of https://github.com/sc0v/trailerapp
Participant creation refactoring.
New non-restful routes for tool lookup and participant lookup.

Fixed participant validation on acceptance of hardhat waiver.
Add autofocus and disable autocomplete on lookup text field.
Point new participants at the lookup form.
Memberships now respects the session variable return_url so that
we can go
  tool checkout -> new participant -> add memberships -> continue tool checkout
or
  new participant -> add memberships -> add another new participant
as specified by the user in other views