#4152 [HHQ-4015] Better handling bad URLs with .html extension

[Hyperic Team]

http://jira.hyperic.com/browse/HHQ-4015


Most incorrect URLs are caught correctly and result in the generic HQ error page. The exception to this are URLs ending in .html, these are being handled directly by tapestry and result in a stacktrace being shown to the user. I'll attach an example.