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_Communicator.hxx

@@ -49,6 +49,20 @@ public:
   //! \param theParameters a parameters container
   Standard_EXPORT virtual void SetParameters (const Handle(TInspectorAPI_PluginParameters)& theParameters) Standard_OVERRIDE;
 
+  //! Provide container for actions available in inspector on general level
+  //! \param theMenu if Qt implementation, it is QMenu object
+  Standard_EXPORT virtual void FillActionsMenu (void* theMenu) Standard_OVERRIDE { myWindow->FillActionsMenu (theMenu); }
+
+  //! Returns plugin preferences, empty implementation by default
+  //! \param theItem container of preference elements
+  virtual void GetPreferences (TInspectorAPI_PreferencesDataMap& theItem) Standard_OVERRIDE
+  { myWindow->GetPreferences (theItem); }
+
+  //! Stores plugin preferences, empty implementation by default
+  //! \param theItem container of preference elements
+  virtual void SetPreferences (const TInspectorAPI_PreferencesDataMap& theItem) Standard_OVERRIDE
+  { myWindow->SetPreferences (theItem); }
+
   //! Updates content of the current window
   virtual void UpdateContent() Standard_OVERRIDE { myWindow->UpdateContent(); }