Rewrite demo applet to web-application for GAE

[RodionGork]

Demo applet (used at the http://frej.sourceforge.net page) should be rewritten to simple web-application so we can host it at google-app-engine and insert as iframe.

Basically it could be like this:

• download sample application for GAE;
• modify servlet to receive data, process them with library and respond the answer;
• modify html page to have the same view as applet's form;
• create javascript to send data between form and servlet.

More details could be found in this description:
http://www.codeabbey.com/index/forum_topic/4b210c75d913da6b508f9634a2b9fc65