move tool changes that got lost when branching ??
- move tool
- new rendering functions for unit cylinder and unit cone
- better handling for selection, and update of the focus point
- parser of obj file
- a bunch of obj models for symbols
- sample models loaded randomly on the branches
Merge branch 'ShadyBranch' into sprint6

Conflicts:
	VNet.Graphics.SlimDX/SlimDXEngine.cs
	VNet.Graphics/Scene.cs
	VNet.Graphics/Tools/CreateBranchTool.cs
	VNet.Graphics/Tools/IViewTool.cs
	VNet.Graphics/Tools/MoveTool.cs
	VNet.Graphics/Tools/SelectTool.cs
	VNet.Graphics/View3D.xaml.cs
	VNet.Graphics/Viewables/TranslationGizmo.cs
	VNet.Graphics/Viewables/ViewableBranch.cs
	VNet.ProPlusServices/Databases/Default/vnet.vds