[WIP] Create custom behavior for RouteNotFoundException

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | no
| Fixed tickets | #10
| License       | MIT
| Doc PR        | need to be done

Todo:
* [ ] implement the `create()` methods of the base matcher i created (parent, ancestor)
* [ ] bring the `BestMatcherPresentation` to use the custom exception.html.twig i created
* [ ] test for `BestMatcherPresentation`
* [ ] tests for both base matcher
* [ ] finish frontend test by crawling for some given stuff
> In ErrorHandling/AncestorBestMatcher.php:
> 
> > +/**
> > + * This BestMatcher tries to create a route collection of
> > + * all ancestors of a given uri.
> > + *
> > + * @author Maximilian Berghoff <Maximilian.Berghoff@gmx.de>
> > + */
> > +class AncestorBestMatcher extends PhpcrBestMatcher
> > +{
> > +
> > +    /**
> > +     * {@inheritDoc}
> > +     */
> > +    public function create(Request $request)
> > +    {
> > +        // TODO: Implement create() method.
> > +    }
> you mean this: https://github.com/doctrine/phpcr-odm/blob/master/lib/Doctrine/ODM/PHPCR/DocumentManager.php#L898
> 

yes ..