* Don't create a WebRequest instance to put in $wgRequest in test since it is meant for HTTP requests, not command line ones
* Force $wgAlwaysUseTidy to false in ExtraParserTest, having it to true breaks testBug8689() and testParse()
Using a title like testParse instead of ExtraParserTest::testParse (thus without colons),
means that it doesn't need to be checked if it's an interwiki, and no interwiki db (either Cdb or normal db) is needed.
So these tests can be run as Databaseless.