Revert "Don't set DISCO_DEBUG by default"
Revert "Don't set DISCO_DEBUG by default"

This reverts commit dc4e3071f0791810f6d11d666c3b2405422266ae.

simudream/disco,pombredanne/disco,mozilla/disco,beni55/disco,pombredanne/disco,pombredanne/disco,pavlobaron/disco_playground,scrapinghub/disco,mwilliams3/disco,mwilliams3/disco,scrapinghub/disco,oldmantaiter/disco,discoproject/disco,beni55/disco,seabirdzh/disco,mwilliams3/disco,pavlobaron/disco_playground,pooya/disco,simudream/disco,scrapinghub/disco,seabirdzh/disco,simudream/disco,ErikDubbelboer/disco,mozilla/disco,seabirdzh/disco,beni55/disco,ErikDubbelboer/disco,ktkt2009/disco,mozilla/disco,pooya/disco,ktkt2009/disco,scrapinghub/disco,ktkt2009/disco,pavlobaron/disco_playground,pombredanne/disco,simudream/disco,seabirdzh/disco,ErikDubbelboer/disco,discoproject/disco,simudream/disco,mwilliams3/disco,ErikDubbelboer/disco,seabirdzh/disco,discoproject/disco,ErikDubbelboer/disco,pooya/disco,pavlobaron/disco_playground,ktkt2009/disco,mwilliams3/disco,mozilla/disco,pooya/disco,oldmantaiter/disco,beni55/disco,oldmantaiter/disco,pombredanne/disco,ktkt2009/disco,oldmantaiter/disco,discoproject/disco,beni55/disco,oldmantaiter/disco,discoproject/disco