move DAO to data project

add DAO Interfaces
try to fix
try fix
Merge remote-tracking branch 'origin/master' into D3

Conflicts:
	src/Domain/Domain.csproj
	src/Domain/Entity/Mill/Pipe.cs
	src/Domain/Entity/Mill/Railcar.cs
Merge pull request #154 from olga-jane/D_Kulish_1

code for mill entities