BUG 274 REST response instead of NumberFormatException

Raised NumberFormatException is now catched and thrown next as
WebApplicationException which is displayed as return message for REST
call.

Change-Id: I1b4ee74c6a953fe3b64ef47c07477c29d892a87c
Signed-off-by: Jozef Gloncak <jgloncak@cisco.com>
Merge "BUG 274 REST response instead of NumberFormatException"