Improve well path modeling

* Improve handling of MD at first target
* When sea level well target is disabled, update MD of first target
* Show well target spheres by default, allow toggling of spheres
* Activate well target modifiers when clicking on well targets
* Remove selection update causing an unstable 3D view
* Improve display and handling of multiple locations
* Add special 3D target for tie in well target
* Add slider to tie in MD input field
* Show MD in well path target table
* Delete all well path laterals when deleting a well path

* Python : Add lateral to parent well
* Python : Add perforation interval

ApplicationLibCode/ProjectDataModel/WellPath/RimWellPathTieIn.h

@@ -53,6 +53,10 @@ private:
     QList<caf::PdmOptionItemInfo> calculateValueOptions( const caf::PdmFieldHandle* fieldNeedingOptions,
                                                          bool*                      useOptionsOnly ) override;
 
+    void defineEditorAttribute( const caf::PdmFieldHandle* field,
+                                QString                    uiConfigName,
+                                caf::PdmUiEditorAttribute* attribute ) override;
+
 private:
     caf::PdmPtrField<RimWellPath*> m_parentWell;
     caf::PdmPtrField<RimWellPath*> m_childWell;