Convert spaces before colon to non-breaking

editor.js

(function() {
	tinyMCE.onAddEditor.add(function (mgr, ed) {
		ed.onSetContent.add(function(ed, o) {
			o.content = o.content.replace(/\s:/g, ' :');
		});
		
		ed.onGetContent.add(function(ed, o) {
			o.content = o.content.replace(/\s:/g, ' :');
		});
	});
})();