some more updated firefox 24 expectations

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8789 5f5364db-9458-4db8-a492-e30667be6df6
support more features for DOMImplementation (Frank Danek)

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8790 5f5364db-9458-4db8-a492-e30667be6df6
simplified testcases (wip)

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8791 5f5364db-9458-4db8-a492-e30667be6df6