[FIX] : remove mark on selected text when click on edit

bzr revid: aja@tinyerp.com-20140319090917-hkaj0jnm95hr0wb2

addons/website_blog/static/src/js/website_blog.editor.js

@@ -31,6 +31,7 @@
         }),
         edit: function () {
             $('.popover').remove();
+            $('mark').contents().unwrap();
             this._super();
             var top_nav = _.isNull($('#website-top-navbar').height()) ? 0 : $('#website-top-navbar').height();
             var vHeight = $(window).height() - ($('header').height() + top_nav);