First bulk of model V3 logic
First bulk of model V3 logic
Added give/take functionallity to StoreInventory
cosmetic
all pointers between domain objects were converted to String itemId
removed level from UpgradeVG

- added nextItemId to UpgradeVG
fixed example project
logging only when debugging
Merge branch 'modelV3'

* modelV3:
  logging only when debugging
  fixed example project
  removed level from UpgradeVG
  all pointers between domain objects were converted to String itemId
  cosmetic
  Added give/take functionallity to StoreInventory
  First bulk of model V3 logic
  First bulk of model V3 logic