In order to allow STK redirects to specify querystrings it would be helpful to have a method to retrieve the querystring and fragment from a url.
For example, given http://url?a=1&b=2#c , the method should return ?a=1&b=2#c.

Additionally, contentByPath and nodeByPath must remove the querystring and fragment from url's before calling SessionUtil.getNode(), so that the calls succeed.