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/Commands/WellPathCommands/RicNewWellPathLateralAtDepthFeature.cpp

@@ -84,8 +84,8 @@ void RicNewWellPathLateralAtDepthFeature::setupActionLook( QAction* actionToSetu
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
-RimWellPath* RicNewWellPathLateralAtDepthFeature::createLateralAtMeasuredDepth( RimWellPath* parentWellPath,
-                                                                                double       parentWellMD )
+RimModeledWellPath* RicNewWellPathLateralAtDepthFeature::createLateralAtMeasuredDepth( RimWellPath* parentWellPath,
+                                                                                       double       parentWellMD )
 {
     RimProject*            project      = RimProject::current();
     RimWellPathCollection* wellPathColl = RimTools::wellPathCollection();