'Create a one-time-use claim URL for a user to claim a trophy.
`unique_award_id` - A string that uniquely identifies the kind of
Trophy the user would be claiming.
See: token.py:AwardClaimToken.uid
`award_codename` - The codename of the Award the user will claim
`description` - The description the Trophy will receive
`url` - The URL the Trophy will receive'

def create_award_claim_code(self, unique_award_id, award_codename, description, url):

    award = Award._by_codename(award_codename)
    token = AwardClaimToken._new(unique_award_id, award, description, url)
    return token.confirm_url()
