Make a framework for testing the engine and game pages

[ogamespec]

• An instance of the universe (game folder) is located on localhost
• A python script controlling the testing process (https://stackoverflow.com/questions/645312/what-is-the-quickest-way-to-http-get-in-python)
• A set of JSON files describing the test ("runs")
• Set of reference data (database dumps)

Engine modules (battle.php, prod.php and others) are tested separately from game pages (pages folder).

Not urgent, just in the mood to do something periodically.