Begin to HUB code
Added a heart sprite

Sprite for hearts in HUD
Made the gauges class for drug effect they belong to the hud of the player
Some little changes to the hud and healthheart classes (ctor & dtor)
Did a bit of fuctionality to the hud
Hearts visualized
DrugGauge and HealthHearts are working
ILevel knows HUD. Every level has HUD
Merge branch 'master'
DrugDurationGauge getSurface to getLevelSurface