Fixed more issues with ForceBlocks.js and WebKit.
Fixed more issues with ForceBlocks.js and WebKit.

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