Use cookies to store the last returned value for this session.
Added tests for the asynchronous processing of requests.
Allow multiple connections.
Changed the cookiename to be the hashcode plus fieldname instead of
classname plus fieldname. This allows a easier reinitialization in a
second session.
Made it simpler.
Changed the url for post requests: A index value is now needed. The
created objects are not stored in a list anymore; instead a map is used.
Untested version of a client.