normalise error reporting
Allow specifying fetch type for sqlresult_to_json
Misc. minor bug fixes
Change gameServer.php to produce output in format expected by client Javascript
Implement exception-based error-handling in gameServer.php
Improve gameServer.php's structure

- Both synchronicity (correctness) and readability
Improve model.js's error handling
Migrate game name duplicate-checking to utilise Exceptions
Misc. formatting edits