Allow members without a DUPR account to sign up for DUPR NR events

We have some clinics that are DUPR 0.0-2.749. We had a scenario where someone without a DUPR account tried to sign up for the clinic but couldn't since they need to have a DUPR account at least tied to their CR account to sign up.

One solution is to just remove the DUPR restriction all together, which I have done in the meantime. But I think it is a reasonable solution to allow players who don't have a DUPR id attached to their account to sign up for an event that allows for DUPR "Not Rated" ratings to sign up.

One of the reasons I want to have a restriction is that I want to keep the upper limit to ensure that no one above the level can sign up and either be frustrated by the lower level players or ruin the experience for the players actually in that range.