Prompt for confirmation when closing logging window while roasting a batch.

config/Windows/productionroaster.xml

@@ -495,6 +495,7 @@
 				externtrans.display(0);
 			}
 			stop.enabled = true;
+			window.windowModified = true;
         });
 		for(var i = 0; i < annotationButtons.length; i++) {
 			if(channels.length > 0)
@@ -544,6 +545,7 @@
 				offsets[translationChannel].measurement.disconnect(currentDetector.newMeasurement);
 			}
 			start.enabled = true;
+			window.windowModified = false;
         });
 		stop.annotation.connect(function(note, tcol, ncol) {
 			for(var i = tcol; i < ncol; i++) {