Link up PHP container with tools

There are a number of issues that require (or will benefit from) tools to be called from the CakePHP app container (#140 (closed), #229). To do that, there needs to be a live server in each of the docker containers hosting tools. This server (or multiple servers) should handle REST API-like requests to call the tools.

• Citation.js (Node.js) is available at node-tools:3000 (Node.js) in the node-tools container
• CoNLL-RDF (Java) is available at node-tools:3001 (Node.js) in the node-tools container
• CDLI-CoNLL-to-CoNLLU-Converter (Python 3) is available at node-tools:3002 (Node.js) in the node-tools container
• upload (???)
• Semantic-Role-Labeler (Python)
• atf2conll-convertor (Python 2)
• brat_to_cdli_conll_converter (Python 3)
• conllu.py (Python 2)
• morphology-pre-annotation-tool (Python 3) is available at node-tools:3004 in the node-tools container
• pyoracc (Python 3)
• cqp4rdf (Python)