listsets with textgrid works with tg-edition now, not dariah-collection type!

oaipmh-core/src/main/java/info/textgrid/middleware/SetDeliverer.java

@@ -61,7 +61,7 @@ public class SetDeliverer {
     ListSetsType setList = new ListSetsType();
     QueryBuilder aggQuery;
     if (this.textgrid) {
-      aggQuery = QueryBuilders.matchPhraseQuery("format", TextGridMimetypes.DARIAH_COLLECTION);
+      aggQuery = QueryBuilders.matchPhraseQuery("format", TextGridMimetypes.EDITION);
     } else {
       aggQuery = QueryBuilders.matchPhraseQuery("descriptiveMetadata.dc:format",
           TextGridMimetypes.DARIAH_COLLECTION);