fixed minor bugs, added import for From-Hell in Erfurt

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

de.srsoftware.cal.app/src/main/java/de/srsoftware/cal/app/AutoImporter.java

@@ -287,7 +287,7 @@ public class AutoImporter implements Runnable, ClassListener {
 
 	@Override
 	public void classAdded(Class<?> aClass) {
-		if (Importer.class.isAssignableFrom(aClass) && aClass.getSimpleName().contains("Ebu")) try {
+		if (Importer.class.isAssignableFrom(aClass))) try {
 			var instance = aClass.getDeclaredConstructor().newInstance();
 			importers.add((Importer) instance);
 			lastImport = null;