MW 1.24+ / Hotfix for missing Redirect caused by bug 62856

MW-core has yet to provide a working solution (which it hasn't)  but to avoid further delay (due the ContentHandler on redirects #212 ) and to fix the problem `forceToUseParser` is added to avoid the `ContentHandler` usage during the Update.

SimplePageRedirectRegressionTest is running again on MW 1.24+
> But parse does not return an instance of a new build thing

It is just a switch, so I can do  `$contentparser->forceToUseParser()->parse()` without having to do:
```
$contentparser->forceToUseParser();
$contentparser->parse();
```

If it weren't for the bug I wouldn't need this but since the `ContentHandler` sucks ...