(#22) Use embedded file resources in FileResourceProvider, put them into template cache
(#22) Load file listings as soon as possible
(#22) Spec-tests and Changelog
(#22) use a configuration option to enable use of embedded file resources
Merge branch 'feature/22-use-embedded-file-resources'

* feature/22-use-embedded-file-resources:
  (#22) use a configuration option to enable use of embedded file resources
  (#22) Spec-tests and Changelog
  (#22) Load file listings as soon as possible
  (#22) Use embedded file resources in FileResourceProvider, put them into template cache