[CAUSEWAY-308] Don't show (null) for a property or a parameter that has no reference (instead show an empty string)

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: viewer-wicket-1.0.0
• Fix Version/s: viewer-wicket-1.1.0
• Component/s: Viewer Wicket
• Assignee: Jeroen van der Wal
• Reporter: Jeroen van der Wal
• Created: 17/Jan/13 15:44
• Updated: 31/Jan/13 14:00
• Resolved: 18/Jan/13 10:49