Fix pencilcodeembed for non-http/s referers.
Fix pencilcodeembed for non-http/s referers.

cacticouncil/pencilcode,davidbau/pencilcode,PencilCode/pencilcode,sakagg/pencilcode,Dinuka2013513/pencilcode,xinan/pencilcode,PencilCode/pencilcode,sakagg/pencilcode,PencilCode/pencilcode,xinan/pencilcode,dweintrop/pencilcode,davidbau/pencilcode,davidbau/pencilcode,dweintrop/pencilcode,dweintrop/pencilcode,dweintrop/pencilcode,cacticouncil/pencilcode,Dinuka2013513/pencilcode,Dinuka2013513/pencilcode,xinan/pencilcode,cacticouncil/pencilcode,PencilCode/pencilcode,davidbau/pencilcode,Dinuka2013513/pencilcode,cacticouncil/pencilcode,sakagg/pencilcode,sakagg/pencilcode,davidbau/pencilcode,xinan/pencilcode