ARQGRA-254: expose LocalStorage and SessionStorage as resources
ARQGRA-284: guardXhr deprecated and replaced with guardAjax
ARQGRA-168: QUnit tests for Graphene.Page.RequestGuard
ARQGRA-274: request guard is able to detect request in progress
ARQGRA-272: introduced Graphene.waitForHttp - e.g. for redirected requests
ARQGRA-170: static contexts merged and added support for multiple browsers