SP-508, BIS-158: Add a timestamp to download URL in order to avoid taking file from browser cache.

SVN: 28373

openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/attachment/AttachmentDownloadHelper.java

@@ -48,6 +48,7 @@ public class AttachmentDownloadHelper
         // NOTE: this exp.getId() could be null if exp is a proxy
         methodWithParameters.addParameter(GenericConstants.TECH_ID_PARAMETER,
                 attachmentHolder.getId());
+        methodWithParameters.addParameter("timestamp", System.currentTimeMillis());
         return methodWithParameters.toString();
     }
 }