Added card description for addons 2..8

 Changes to be committed:
	modified:   client/templates/game.html
	modified:   game.css
	modified:   private/cards.json
	new file:   private/cards2.json
	new file:   private/cards3.json
	new file:   private/cards4.json
	new file:   private/cards5.json
	new file:   private/cards7.json
	new file:   private/cards8.json
	modified:   server/server.js