Merge branch 'master' into feature_rene_17_xrechnung

# Conflicts:
#	.gitignore
#	BeWo/DebugConfig.cs
#	BeWo/ServiceProxy/Generated.cs
#	Data/ASPHibernateSessionManager.cs
#	Host/Web.config
#	Service/Service.csproj
#	Service/ServiceContracts/IAccountingService.cs
#	Service/ServiceImplementations/AccountingServiceImp.cs
#	Shared/Core/Utils.cs
#	Shared/DataContracts/InvoiceBaseDC.cs
#	Shared/Shared.csproj

Host/BeWo.Master.cs

@@ -2,10 +2,6 @@
 using System.Linq;
 using System.Web.UI;
 
-using BeWo.Data;
-
-using BS.Shared;
-
 namespace Host
 {
     public partial class BeWo : MasterPage