Scoring system and scoreboard implementation

[miniature-tiger]

Now that the majority of the game functionality has been added, one of the final steps is to add scoring. Players are rewarded for game actions: Discovering resources, building ships, and fulfilling trade contracts. A score board has been added on the header slider. The scoreboard shows each time a scoring action is made.

Implementation of the scoring system is in a new js file: scoring.js.
Implementation includes:

• An array to hold a full detailed breakdown of the scores.
• A method to translate actions into scores and commentary.
• A method to summarise the full score array into a format for the score board.
• A method to draw the scoreboard.

The update also included:

• Adding calls to the scoring update from appropriate points in the game logic.
• Adding the CSS styling for the header.