Ignore 'lgtm' from the issue owner for Message.approval.
Ignore 'lgtm' from the issue owner for Message.approval.

Review URL: http://codereview.appspot.com/4526091

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