Improved Webpagerunner

Would be nice to have an option to wipe all session information after each run. Currently having some issues with testing loadbalanced servers.

I belive the current implementation uses one instance of org.apache.http.impl.client.DefaultHttpClient , had a brief look at the code. Would be nice with an optional implementation using htmlunit since it handles to evaluate pages with javascript much better.

So in brief a few more check boxes on the webpage runner "Use htmlunit", "Clean session info after each run".

All the best Pether