Fix wrapping on update detail page

Sometimes we get massively long lines from the update script
(particularly if there's an error) so ensure that long lines get
wrapped.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

layerindex/static/css/additional.css

@@ -267,6 +267,7 @@ td.info {
     background-color: transparent;
     border-style: none;
     padding: 0;
+    white-space: pre-wrap;
 }
 
 .td-pre {