Switched development.html to use new external_plugins option.
Switched development.html to use new external_plugins option.

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