Updates query method for attendee table

[Malechus]

Updates query method for attendee table

[chameleoncircuit]

Hi @Malechus I ran into an issue while testing this PR.

1. User registers for a single ticket: passes
2. User registers two tickets: passes
3. User registers a single ticket with a badgename that's already registered: passes
4. User registers for two tickets with one ticket matching an existing badge name: passes
5. User registers for two tickets and both tickets match existing badge names, different orders: passes
6. User registers for a ticket and first and last name matches existing registration: fails: Initial order's orderId is overwritten, both records marked as paid

Other bugs identified (may not be related to this PR):

• Editing a registration adds a new copy of the registration to the cart
• "Register another" button takes you to the checkout page instead of adding another registration