Maintenance fixes

* Remove light mode from theme selection
The light mode is not working well, and was intended to be used when exporting to pdf from dark mode.

* Allow direct edit of summary case name
The name for a summary case can be automatically created. If the user starts to edit the name manually, set the name option to Custom. Make the descriptionField available as not read-only, then it is possible to edit the name directly in the project tree using F2 or double-click.

* Allow drag of ensembles
* Add support for drag/drop of well segments
* Add support for well segment number stepping in toolbar

ApplicationLibCode/Commands/RicImportRevealSummaryCaseFeature.cpp

@@ -59,7 +59,6 @@ void RicImportRevealSummaryCaseFeature::onActionTriggered( bool isChecked )
         auto newSumCase = new RimCsvSummaryCase();
 
         newSumCase->setSummaryHeaderFileName( filePath );
-        newSumCase->updateOptionSensitivity();
         project->assignCaseIdToSummaryCase( newSumCase );
 
         sumCaseColl->addCase( newSumCase );

ApplicationLibCode/Commands/RicImportStimPlanSummaryCaseFeature.cpp

@@ -59,7 +59,6 @@ void RicImportStimPlanSummaryCaseFeature::onActionTriggered( bool isChecked )
         auto newSumCase = new RimCsvSummaryCase();
         newSumCase->setFileType( RimCsvSummaryCase::FileType::STIMPLAN );
         newSumCase->setSummaryHeaderFileName( filePath );
-        newSumCase->updateOptionSensitivity();
         project->assignCaseIdToSummaryCase( newSumCase );
 
         sumCaseColl->addCase( newSumCase );