Setup phase

[FredericDesgreniers]

The way it works right now is that the turns starts immediately. Before the main board shows up, we should give the choice for the player to chose an active pokemon.

The setup phase should:
1- check for mulligans
2- If one is found, get new cards and other player (opponent) can draw a card (he has a choice if he wants to draw).
3- Ask the player to chose an active pokemon

[laihaotao]

Now the select active pokemon "some how" worked, but I still need to improve the UI stuff. For check mulligans, now the implementation is hard-code in the player's constructor, it needs to be refactored. Since when the player is running its constructor, the gameboard object is still null. If we want to give the player a choice to say we want to draw one more card we need GameBoard invoked. @FredericDesgreniers