fixed bug in listview updates
Merge branch 'martin' of https://github.com/thad54/swe2 into martin

Conflicts:
	Client/SWE_UI/SWE_UI/bin/Debug/SWE_UI.exe
	Client/SWE_UI/SWE_UI/bin/Debug/SWE_UI.pdb
	Client/SWE_UI/SWE_UI/obj/Debug/App.g.cs
	Client/SWE_UI/SWE_UI/obj/Debug/Content/ContactReference.g.cs
	Client/SWE_UI/SWE_UI/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
	Client/SWE_UI/SWE_UI/obj/Debug/EditBillWindow.g.cs
	Client/SWE_UI/SWE_UI/obj/Debug/EditContactWIndow.g.cs
	Client/SWE_UI/SWE_UI/obj/Debug/GeneratedInternalTypeHelper.g.cs
	Client/SWE_UI/SWE_UI/obj/Debug/MainWindow.g.cs
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI.csproj.FileListAbsolute.txt
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI.csproj.GenerateResource.Cache
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI.csprojResolveAssemblyReference.cache
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI.exe
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI.pdb
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI_MarkupCompile.cache
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI_MarkupCompile.i.cache
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI_MarkupCompile.i.lref
	Client/SWE_UI/SWE_UI/obj/Debug/SWE_UI_MarkupCompile.lref
configuration finished