[BIS-347] Improvements to dynamically generated graphs: make ',' the default separator.

SVN: 28481

datastore_server/source/java/ch/systemsx/cisd/openbis/dss/generic/server/graph/TabularDataGraphCollectionConfiguration.java

@@ -231,7 +231,7 @@ public class TabularDataGraphCollectionConfiguration implements ICsvFileReaderCo
     {
         comment = '#';
 
-        this.columnDelimiter = PropertyUtils.getChar(properties, SEPARATOR_PROPERTY_KEY, ';');
+        this.columnDelimiter = PropertyUtils.getChar(properties, SEPARATOR_PROPERTY_KEY, ',');
         this.ignoreComments =
                 PropertyUtils.getBoolean(properties, IGNORE_COMMENTS_PROPERTY_KEY, true);