#1648 Remove dependency on active view from color generation.

Separate the fracture geometry generation methods from the wellpath methods. Use eclipse View as argument.
Fixed some constness stuff in View

ApplicationCode/ProjectDataModel/RimGeoMechView.h

@@ -61,7 +61,7 @@ public:
 
     void                                                setGeoMechCase(RimGeoMechCase* gmCase);
     RimGeoMechCase*                                     geoMechCase();
-    virtual RimCase*                                    ownerCase();
+    virtual RimCase*                                    ownerCase() const override;
 
     virtual void                                        loadDataAndUpdate();