discodb: added comparison method to Q objects (for sorting)
discodb: added comparison method to Q objects (for sorting)

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