[CSWH] we need to decorate links after an AJAX action

Our ClientSideWindowhandler decorates all <a href="...> on the page after the initial page rendering. The same decoration must also be done after a part of the page got replaced via an AJAX action.

Currently the links on those parts of the page do not get decorated and thus clicking on such a link doesn't store away the DOM to the html5 localstorage. Which means the windowhandler.html intermediate page cannot restore anything and you end up with a white 'Loading...' intermediate page.