With the minimal server we want to implement a very basic workflow that accepts a translation request and verifies if the request is valid. We do want to support different file types as well as URL references to files, though we will not process the files. During M1 we can test the server with a browser add-on like the Firefox RESTClient add-on (https://github.com/chao/RESTClient) until we implement our own web page client in M2.