oslc-server needs to configure the whole express routes in order to support multiple adapters

[jamsden]

oslc-server uses oslc-service uses ldp-service uses ldp-service-jena.

We want to be able to specify these dependencies in one place, the oslc-server package.json file, so that the server and its configuration specifies how things are assembled.

This means all the dependency management and loading needs to be done in oslc-sever, not in the assembled services.

So oslc-server needs to require the necessary modules, and assemble the routes. The used services don't have these dependencies, and only use express next() to delegate to the server's desired configuration.

[jamsden]

Reimplemented the express.js so that the storage service and routes for oslc-service and ldp-service are now done in oslc-server.