Part 2: Phase Observer

[pbgnz]

Using the Observer design pattern, implement a view that displays information happening in the current phase.

It should first display a header showing what player and what phase is currently being played, e.g. “Player 3: Attack phase” or “Player 1: Fortification phase” Then it should display important information related to what is happening in this phase, which should be different depending on what phase is being played.

This should dynamically be updated as the game goes through different players/phases and be visible at all times during game play.
Additional Information
dependant on issue #39