This is a pretty simple mapper which returns template pathes for
a supplied template name. If the path does not exist, it looks for
a templated called "Default" in the same package.
This path can be used by the TemplateEngine to access
a certain resource to actually render the template.
author: Henning P. Schmiedehausen version: $Id: ScreenDefaultTemplateMapper.java 534527 2007-05-02 16:10:59Z tv $