[DS-1185] Adding configured journal title field to code that builds meta-tags.

dspace-api/src/main/java/org/dspace/app/util/GoogleMetadata.java

@@ -670,6 +670,9 @@ public class GoogleMetadata
         // ISBN
         addSingleField(ISBN);
 
+        // JOURNAL_TITLE
+        addSingleField(JOURNAL_TITLE);
+
         // VOLUME
         addSingleField(VOLUME);