Refactored GROS: Moved DynamicSim into Heuristic, DynamicMath is now Math - a separated shared calculus package.
 Refactored DynamicSim so that it does not inherit a DynamicModel, but has one instead. Cleared some warnings.
 Added Database package - for reading/writing entities and nodes. Updated project file.
Merge branch 'master' of https://github.com/joaonvfigueiredo/gros