The renderer is now a bit smaller and asks the TemplateFinder for the
actual resources. That way it can just concentrate on rendering instead
of finding out, which stuff actually exists and which not.
The template finder is now the instance to ask for templates. It was
already looking for them, so it should be able to handle questions
regarding the existence of templates too.
This step is a preparation to extend the functionality of the renderer.
To make the main class easier, the search for templates and building of
the tree is extracted into its own class.
Gibheer
Stormwind