testing: Use sans-serif font for test results

We could later extend the stylesheet more or even add something similar
to actual templates (e.g. a shared header/footer).

testing/hosts/winnetou/etc/apache2/sites-available/000-default.conf

@@ -8,6 +8,7 @@
 
         RewriteEngine on
         RewriteRule "^/testresults/.+/images/(.*)" "/images/$1" [PT]
+        RewriteRule "^/testresults/.+/css/(.*)"    "/css/$1" [PT]
 
         LogLevel warn
         ErrorLog ${APACHE_LOG_DIR}/error.log