Rename TestResponder to SuiteResponder.
Next, we'll create a specialised TestResponder.
Add (single) test responder as specialization of suitereponder.
Remove port from command line execution. We do not start a server at all.
Implemented SuiteSuite(Exception) feature. Now the whole suite execution can be stopped due to a StopSuite exception.
Query tables should play well when not run.
Make sure slim servers spawned in acceptance tests of not use conflicting port numbers.
Remove unused listener.
Raise an error if trying to create a new page for an already existing page. Fixes #459.
Merge pull request #538 from amolenaar/testresponder

Behaviour of a test page B which is a child of a test page A?
Be more verbose on SlimService errors. Port cycling starts at SLIM_PORT.
The Acceptance tests use a different port number. Slim servers started from tests use the default ports.
Remove offending test (stalls unit tests on windows for me).
Merge pull request #492 from amolenaar/stopsuite

Implement StopSuiteException to stop test run.