Fix issue #206

Fix Tethys click export issue for unclassified clicks.

src/clickDetector/ClickClassifiers/ClickBlockSpeciesManager.java

@@ -44,7 +44,7 @@ public class ClickBlockSpeciesManager extends DataBlockSpeciesManager<ClickDetec
 		}
 		int listIndex = masterManager.codeToListIndex(dataUnit.getClickType());
 		if (listIndex < 0) {
-			return null;
+			return getDefaultSpeciesCode();
 		}
 		return masterManager.getSpeciesList()[listIndex];
 	}

src/clickDetector/ClickClassifiers/ClickTypeMasterManager.java

@@ -72,6 +72,9 @@ public class ClickTypeMasterManager implements ClickTypeProvider {
 
 	@Override
 	public int codeToListIndex(int code) {
+		if (code == 0) {
+			return -1;
+		}
 		if (types==null) return -1; 
 		for (int i=0; i<types.length; i++) {
 			if (types[i]==code) return i;