data: Fix problems with using non-existing metadata on a linked page. The page data wrapper now has supports for loader to raise a custom exception to declare that they can't return a value after all (this is especially useful for the wildcard loader). The returned value, if any, is also now cached properly.

path_mode: absolute
files:
  - bower_components/jquery/dist/jquery.js
  - bower_components/bootstrap/js/transition.js
  - bower_components/bootstrap/js/collapse.js
  - bower_components/bootstrap/js/scrollspy.js