Request: added keep-Alive support via KEEPALIVE.EXTERNAL_EXCEPTION
 

git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@25633 ebf7c1c2-ba36-0410-9fe8-c592906822b4
git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@25647 ebf7c1c2-ba36-0410-9fe8-c592906822b4
Browser: return invalid redirect responses

git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@25648 ebf7c1c2-ba36-0410-9fe8-c592906822b4