simple test server

Hi,

this is the very simple draft of the test server implementation.

The admin should
1) change ftp server addres in download.py
2) change ftp directory (from 3.9 to 3.10)
3) change BooleanTest to TestCase in runTests.st (BooleanTest only is
much faster for testing)
4) change sending of reports by e-mail in testserver.sh
5) run this script periodically

-- Pavel