Fixed so header elements gets created instead of paragraphs in a hgroup element.
Fixed so header elements gets created instead of paragraphs in a hgroup element.

jashua212/tinymce,danchr/tinymce,Zimbra/tinymce,endjin/tinymce,collective/tinymce,dziemian007/tinymce,howanghk/tinymce,toxalot/tinymce,ikuchmin/tinymce,fhchina/tinymce,Razzwan/tinymce,collective/tinymce,FernCreek/tinymce,jashua212/tinymce,1099511627776/tinymce,shilpi230/tinymce,jtark/tinymce,M4R7iNP/tinymce,Zimbra/tinymce,blakewallan/tinymce,ChristophKaser/tinymce,leofeyer/tinymce,sachgits/tinymce,TeamupCom/tinymce,support-dot-com/tinymce,fhchina/tinymce,1099511627776/tinymce,ice8lue/tinymce,fillabs/TinySpecMCE,enfold/tinymce,nikolas/tinymce,bsuh/tinymce,cclaerhout/tinymce,ikuchmin/tinymce,ETSI-CTI/TinySpecMCE,simachewh/tinymce,leofeyer/tinymce,VioletLife/tinymce,simachewh/tinymce,henrythewasp/tinymce,bsuh/tinymce,ChristophKaser/tinymce,fashionsun/tinymce,aduth/tinymce,widgetfactory/tinymce,cclaerhout/tinymce,dziemian007/tinymce,MediehusetTek/tinymce,endjin/tinymce,VioletLife/tinymce,gabixdev/tinymce,rbecheras/tinymce,rbecheras/tinymce,adaptiffdesigns/tinymce,gencer/tinymce,ETSI-CTI/TinySpecMCE,tinymce/tinymce,nikolas/tinymce,widgetfactory/tinymce,nbcp/tinymce,blakewallan/tinymce,sjbufton/tinymce,danielpunkass/tinymce,jtark/tinymce,adaptiffdesigns/tinymce,sachgits/tinymce,rednose-public/tinymce,Kindling/tinymce,rxl194/tinymce,support-dot-com/tinymce,mplank/tinymce,Shopify/tinymce,kencheung/tinymce,pmpl-5/tinymce,gabixdev/tinymce,howanghk/tinymce,pmpl-5/tinymce,gencer/tinymce,sjbufton/tinymce,ice8lue/tinymce,MediehusetTek/tinymce,kencheung/tinymce,enfold/tinymce,tinymce/tinymce,Razzwan/tinymce,FernCreek/tinymce,M4R7iNP/tinymce,fashionsun/tinymce,fillabs/TinySpecMCE,aduth/tinymce,rednose-public/tinymce,FernCreek/tinymce,danielpunkass/tinymce,Kindling/tinymce,henrythewasp/tinymce,toxalot/tinymce,nbcp/tinymce,danielpunkass/tinymce,rxl194/tinymce,TeamupCom/tinymce,mplank/tinymce,tinymce/tinymce,shilpi230/tinymce,danchr/tinymce