* Integrated the selenium tests into MediaWiki properly, and removed the insecure...

* Integrated the selenium tests into MediaWiki properly, and removed the insecure LocalSeleniumSettings.php concept.
* Removed the insecure web entry point hiding in the maintenance directory, in RunSeleniumTests.php. Replaced it with a special page interface, with CSRF protection and access control. If you wanted a secure web entry point, then I suppose this is how it would be done, but I think it should be killed ASAP.
* As in r68544, removed as many require() calls as possible, since nobody seems to know how to do them properly. Made the usual changes to make classes autoloader-compatible: class constants instead of define(), no file-scope registration code.