first step toward items physical handling

modified:   src/entity/DynamicEntity.java
modified:   src/entity/player/Player.java
modified:   src/entity/projectile/Projectile.java
modified:   src/environment/blocks/DoorBlock.java
modified:   src/environment/blocks/PhysicalBlock.java
modified:   src/item/Item.java
renamed:    src/physics/bodyType.java -> src/physics/GameBodyType.java
modified:   src/physics/PhysicsDataStructure.java
Merge branch 'master' into items