Changes to make it easier to use and customize the propertygrid from external project
Setter methods for implementing a custom HitTestFilterCallback
Implemented inteface for OutlineNode so that a custom outlinenode can be implemented
Format changes
changes to make tests work
Changes to OutlineTreeView to Work With IOutlineNode
Merge branch 'WpfDesignerPropGrid' of git://github.com/gumme/SharpDevelop into gumme-WpfDesignerPropGrid

Conflicts:
	src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/DesignPanel.cs
	src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/PropertyGrid/PropertyGrid.cs
	src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/PropertyGrid/PropertyGridView.cs
	src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/WpfDesign.Designer.csproj
Merge branch 'gumme-WpfDesignerPropGrid'