Added error messages to 404 page

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.1 EE SP5 (5.1.8), 5.2 EE SP5 (5.2.9) , 6.0 EE (6.0.10)
• Fix Version/s: 5.1 EE SP6 (5.1.9), 5.2 EE SP6 (5.2.10), 6.0 EE SP1 (6.0.11)
• Component/s: None
• Labels: None

If an HTTP 404 error page is returned, the error message that caused the 404 is now available on the 404 page.