add class diagrams and biz process flow
Merge branch 'master' of https://github.com/Kooboo/Ecommerce

Conflicts:
	src/Modeling/Kooboo.Commerce.Modeling/Kooboo.Commerce.Modeling.modelproj
	src/Modeling/Kooboo.Commerce.Modeling/ModelDefinition/Kooboo.Commerce.Modeling.uml