Fixed media selection state and added another youtube url pattern.
Fixed media selection state and added another youtube url pattern.

leofeyer/tinymce,fillabs/TinySpecMCE,gencer/tinymce,gencer/tinymce,MediehusetTek/tinymce,blakewallan/tinymce,tinymce/tinymce,rednose-public/tinymce,leofeyer/tinymce,TeamupCom/tinymce,aduth/tinymce,jashua212/tinymce,jashua212/tinymce,danielpunkass/tinymce,nbcp/tinymce,1099511627776/tinymce,aduth/tinymce,danielpunkass/tinymce,ikuchmin/tinymce,sjbufton/tinymce,fillabs/TinySpecMCE,ikuchmin/tinymce,MediehusetTek/tinymce,rednose-public/tinymce,tinymce/tinymce,jtark/tinymce,adaptiffdesigns/tinymce,FernCreek/tinymce,henrythewasp/tinymce,tinymce/tinymce,ETSI-CTI/TinySpecMCE,FernCreek/tinymce,FernCreek/tinymce,rbecheras/tinymce,TeamupCom/tinymce,blakewallan/tinymce,nbcp/tinymce,1099511627776/tinymce,danielpunkass/tinymce,henrythewasp/tinymce,sjbufton/tinymce,rbecheras/tinymce,jtark/tinymce,ETSI-CTI/TinySpecMCE,adaptiffdesigns/tinymce