#49 Fix user limit reached notice

When USER_LIMIT == 0 (no limit) $UserCount is always > USER_LIMIT so the notice is always shown. Actually this commit just implements the exact opposite of the logic on line 137.

I think it would be clearer as

($UserCount >= USER_LIMIT && USER_LIMIT != 0 && !check_perms('site_can_invite_always'))

instead of

(!($UserCount <= USER_LIMIT || USER_LIMIT == 0 || check_perms('site_can_invite_always'))).

If you make that change I’ll be happy to merge it.

OK, I have pushed a new commit with those changes.