LPS-37532 Add paths for Site and Page Templates export
LPS-37537 orderableProperty value is inconsistent with getBackgroundTaskOrderByOperator method
LPS-37537 Add the cur page and delta parameter to the asynchronous resource request

This is not required for the orderByCol and orderByType params, since they are retrieved from latest stored portal preferences if they are null.
LPS-37537 I searched for "int cur = ParamUtil.getInteger(request, SearchContainer.DEFAULT_CU" and noticed that in edit_password_policy_assignments.jsp and other JSPs that the precedence is to do "tabs*", "cur*", "redirect*".. and then the rest. So going with that order.