[SLIDER-1024] extract and rethrow nested IOEs from webapp creation

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Slider 0.81
• Fix Version/s: Slider 0.90.2
• Component/s: Web & REST
• Assignee: Steve Loughran
• Reporter: Steve Loughran
• Created: 14/Dec/15 17:33
• Updated: 14/Dec/15 17:45
• Resolved: 14/Dec/15 17:43

Description

When the webapp fails to launch, it throws a WebAppException

Catch this and if it's wrapping an IOE, rethrow it the underlying exception.

Also: update the signature and javadocs of the method