Statistics Contourmap UI updates (#12060)

* Enable time step selections and controls in view
* Support loading just what we need for statistics contour maps by using custom reader settings
* Close case once done with it unless there are active views.
* Add selection of user interface case (for result selection, display of wells, faults...)
* Avoid int overflow for nested progresses by using double
* Improve auto naming
* Misc. UI improvements

ApplicationLibCode/ProjectDataModel/RimEclipseView.h

@@ -184,6 +184,8 @@ protected:
     void                 onLoadDataAndUpdate() override;
     caf::PdmFieldHandle* userDescriptionField() override;
 
+    virtual std::vector<size_t> activeTimeStepIndices( bool propertyFiltersActive );
+
     bool isShowingActiveCellsOnly() override;
     void onUpdateDisplayModelForCurrentTimeStep() override;
     void updateVisibleCellColors();