Added index for closed, owner, -created
Added index for closed, owner, -created

Review URL: https://codereview.appspot.com/122740043/

draem0507/rietveld,v3ss0n/rietveld,rietveld-codereview/rietveld,salomon1184/rietveld,DeanHere/rietveld,Koulio/rietveld,openlabs/cr.openlabs.co.in,rietveld-codereview/rietveld,dushmis/rietveld,foolonhill/rietveld,xtypebee/rietveld,draem0507/rietveld,google-code-export/rietveld,gco/rietveld,aungzanbaw/rietveld,gavioto/rietveld,openlabs/cr.openlabs.co.in,robfig/rietveld,v3ss0n/rietveld,gco/rietveld,rietveld-codereview/rietveld,gavioto/rietveld,ericmckean/rietveld,v3ss0n/rietveld,Koulio/rietveld,rietveld-codereview/rietveld,ericmckean/rietveld,sajingeo/rietveld,supriyantomaftuh/rietveld,supriyantomaftuh/rietveld,DeanHere/rietveld,robfig/rietveld,xtypebee/rietveld,salomon1184/rietveld,ericmckean/rietveld,andyzsf/rietveld,foolonhill/rietveld,google-code-export/rietveld,sajingeo/rietveld,dushmis/rietveld,google-code-export/rietveld,supriyantomaftuh/rietveld,xtypebee/rietveld,andyzsf/rietveld,arg0/rietveld,aungzanbaw/rietveld,Koulio/rietveld,arg0/rietveld,andyzsf/rietveld,sajingeo/rietveld,draem0507/rietveld,berkus/rietveld,fuzan/rietveld,openlabs/cr.openlabs.co.in,salomon1184/rietveld,berkus/rietveld,gco/rietveld,DeanHere/rietveld,aungzanbaw/rietveld,fuzan/rietveld,gavioto/rietveld,arg0/rietveld,berkus/rietveld,foolonhill/rietveld,robfig/rietveld,fuzan/rietveld,dushmis/rietveld