Add a way of processing dependencies automatically.
This produces a map.json file that we can further process from python.
Also copy all the files needed into the package to a dist directory.
The dist directory contains only the resources we need, so
there is no need for the package to contain the entire
bower_components universe.
Also, the 'dist' directory can by principle be thrown
away and recreated by process-dependencies.
TODO: auto creation of the dist/js, dist/css directories.
Add the actual auto-generated resources.