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

webapp/web/robots.txt

@@ -0,0 +1,17 @@
+User-agent: *
+Disallow: /admin/
+Disallow: /help/
+Disallow: /images/
+Disallow: /js/
+Disallow: /quickedits/
+Disallow: /site_icons/
+Disallow: /src/
+Disallow: /templates/
+Disallow: /themes/
+Disallow: /WEB-INF/
+Disallow: /xsl/
+Disallow: /search/
+Disallow: /coauthors/
+Disallow: /pubsbyorg/
+Disallow: /fedsearch/
+Disallow: /comments.jsp