window.navigate(url) for IE browsers added

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9178 5f5364db-9458-4db8-a492-e30667be6df6
feature naming (will this ever end)

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@9179 5f5364db-9458-4db8-a492-e30667be6df6