Fixing some bugs, now we can select objects but in a very poor way, still need to work on this
Merge branch 'PlayerMovement' of https://github.com/agudpp/CordobaZombie into S4-PLBPR
PlayerUnit and all the other stuff inside GameUnits were modifyied, we still need to change all the things in the HUD/Backpack folder, we need to create the representation of the Backpack
Now we can pick objects using the new interface of the backpack and all the other stuff
Working on HUD part, the BackpackelementBuilder probably should be working now
Still working on the HUD, since nobody is working on this branch nor using the HUD I will push this changes to be able to work from other place