Fix ids for relation anchors to include end positions

Change-Id: Ia4563559cf8f6ec2ad1b27293229e716e47e53d6
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
index 2528735..bca8731 100644
--- a/src/main/resources/log4j2.xml
+++ b/src/main/resources/log4j2.xml
@@ -15,6 +15,7 @@
       <AppenderRef ref="Console"/>
     </Logger>
     <Logger name="de.ids_mannheim.korap.KrillIndex"
+            additivity="false"
             level="trace">
       <AppenderRef ref="Console"/>
     </Logger>