EuroPython/djep — pull request #175 by Markush2010 (2014-06-11 09:47:37+00:00)
Title: Allow ticket types to conditionally prevent sending the invoice PDF to the buyer

Iff a purchase has been paid by invoice, and iff the purchase total is 0,00 EUR
and iff a purchase consists of only ticket types preventing a invoice sending,
don't send the PDF invoice to the "buyer".