*FIXED* Event Signup Placing Everyone into "Queued" Status

[Shadowwolf]

Summary:
Fixed the bug of the Event Signup system placing new signups into a "queued" status even when "Sign up as availible" was chosen.

Cause:
This problem was caused by selecting a value of "0" for class requirements. While the system should have been defaulting to no limit on that class if "0" it was not.

Result:
Signups should now place persons into the event as availible when selected and only "queued" when selected or placed there by the event host. Setting a value of "0" will make that class unrestricted in singup limitations as was intended.