[FIX] Pasting a YouTube URL to the plugin give an error video, #item4674

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@47210 b456876b-0849-0410-b77d-98878d47e9d5
[OUPS] embed is in trunk not in 11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@47213 b456876b-0849-0410-b77d-98878d47e9d5