Massive number of changes this time:

	Added new context menu when ending a characters turn.
		Context menu currently consists of "End Turn" and "Attack"
		The ContextMenu consists of numerous ContextSections. This
		allows extensibility if I need a menu with more sections
		it's built in a way they can easily be added.

	Added specific classes for the implementation of specific
	character types ie. Warrior, Archer etc

	Changed World's SelectedUserActor to accept an interface instead
	of a concrete class.

	Implemented a ScreenManager. This will deal with the MainMenu
	screen and the transition into the game.

	Added a large number of stats as well as simple equations for
	calculating them.

	Updated sprites! You can now distinctly tell the difference
	between teams and each character class.

	Added the ability for units to attack as well as an AttackZone for
	each UserActor (UserActorWithZones). This uses a new TargetBox
	specific to each UserActor.

	Moved content to specific Content project. This will allow
	SpriteFonts etc