Added Ship class and database methods to load/save a ship.
Feature for a player to build a ship.

This changes the webpage to ask the user for a ship name if they don't have a ship. When they create it, the ship is created and saved to the database, then the player is updated with the ship.
Added the ship to the Player to_dict() method for debug.
Merge pull request #16 from ChodeGames/my_first_ship

Add player ship