CSSTidy Code

- added seperate selectors feature to C++
- added a timestamp feature to C++ and PHP

- Fixed a bug for PHP4
- Corrected settings for C++

Improved interface for the web interface of CSSTidy. The PHP version should now have beta quality.

Additional to that, all commit messages like this one will (or rather should) be sent to the mailing list from now on. So all subscribers get a deeper insight into the development process.

Indentation in at-rules is now working correctly

Fixes and various code improvements.
Yet to be updated are the templates, then the new preserve_css mode should be quite finished.

C++: Finished implementation of preserve_css. There are still bugs left and more improvements will be added.

New feature: Preserve CSS (+ many code improvements)

This needs more work of course, C++ incomplete, bugs left in PHP.

Added C++ version to SVN