add json payload validation to disco_web
add json payload validation to disco_web

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