Fix bug: Make player shoot at opponent's board (and not its own)
Document /game webservice
In acceptance test, use next available port (instead of having it fixed to 8080). Fix ApiService no-port constructor so the board is passed by-name (otherwise the players would share the same board)
Prove in an acceptance test that the computer can play through the web service
Unused import
Client to talk to the web service
Rewrite unit test: one test for each operation