0029674: Improvements in Inspector tool

- preferences for dock windows geometry, tree view columns and current view projection;
- ViewControl package for common functionality between plugins;
- processing Location and Orientation for external TopoDS_Shape object
- 'F5' key to update content of each plugin
- visibility column in tree view (used now only in ShapeView)
- properties child item for context (presents tree of current Filters of context)

tools/DFBrowser/DFBrowser_Thread.hxx

@@ -42,10 +42,6 @@ public:
   //! Destructor
   virtual ~DFBrowser_Thread() {}
 
-  //! Sets module to the started thread items
-  //! \param theModule a current module
-  Standard_EXPORT void SetModule (DFBrowser_Module* theModule);
-
   //! Starts all candidate thread items
   Standard_EXPORT void ProcessApplication();