Merge pull request #651 from JulianKniephoff/paper-over-label-duplication

Hide the fact that we are duplicating series labels better

Author: JulianKniephoff

opencast-backend/annotation-impl/src/main/java/org/opencast/annotation/impl/persistence/ExtendedAnnotationServiceJpaImpl.java

@@ -950,9 +950,7 @@ public List<Label> getLabels(final long categoryId, final Option<Integer> offset
 
         // Update our labels with the labels from the master series category
         // Note: Maybe do an actual update instead of delete/create
-        for (Label label: labels) {
-          deleteLabel(label);
-        }
+        labels.replaceAll(this::deleteLabel);
         List<Label> newLabels = new ArrayList<>();
         for (Label seriesLabel : seriesCategoryLabels) {
           final LabelDto dto = LabelDto.create(some(seriesLabel.getId()), categoryId, seriesLabel.getValue(),