Embed youtube with wmode as  to prevent showing toolbar dialogs beneath videos
Merge branch 'develop' into youtube-as-opaque

Conflicts:
	dist/summernote.js
Merge pull request #678 from HackerWins/youtube-as-opaque

Embed youtube with wmode as opaque
Merge branch 'develop' into feature/extract-video-plugin

Conflicts:
	dist/summernote.js
	dist/summernote.min.js
	src/js/editing/Editor.js