fix infolog wont save, if cc was an empty string, seems taglist needs empty now as empty array, not null or ""

etemplate/js/et2_widget_taglist.js

@@ -404,6 +404,7 @@ var et2_taglist = et2_selectbox.extend(
 	 */
 	set_value: function(value)
 	{
+		if (value === '' || value === null) value = [];
 		var values = jQuery.isArray(value) ? jQuery.extend([],value) : [value];
 		this.options.value = values;