Improve output: distinguish between failed assertions (failures) and unexpected exceptions (errors), and print a filtered stack trace for any exception.

webapp/web/fileupload/datastreamModificationSuccess.jsp

@@ -0,0 +1,16 @@
+<%-- $This file is distributed under the terms of the license in /doc/license.txt$ --%>
+
+<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
+
+<div>The file ${orginalFileName} was updated. The file received from you had the MD5 checksum ${checksum}.</div>
+
+<c:if test="${useNewName}">
+<div>The name of the file was also changed to ${newFileName}.</div>
+</c:if>
+
+<c:url value="/individual" var="url">
+    <c:param name="uri" value="${fileUri}"/>
+</c:url>
+
+<div>Goto <a href="${url}">${newFileName}</a></div>
+