Dryad REST API webapp

This is a large pull request, including a new module and framework for a RESTful JSON API. It is intended to grow, but this first version includes endpoints for journals to submit manuscript metadata. It can be used instead of the email parsing journal-submit webapp for future integrations.

This module is built upon Jersey 1.18 and uses Apache Oltu for OAuth support.

A note on organization/architecture - This module adopts many of the patterns prescribed by Jersey - providers/dependency injection, path annotations. Also, the web.xml file dictates what classes are loaded and instantiated within the webapp.

See full documentation (including installation details) at http://wiki.datadryad.org/Dryad_REST_API_Technology.