Bug 449956 - Improve error handling in automation provider

Include error details on 4xx errors creating AutomationRequests in
Hudson and Jenkins automation provider.

Change-Id: Iea6cd106ba3f54ca86083c0ff40256621496f45c
Signed-off-by: Samuel Padgett <spadgett@us.ibm.com>
Bug 449960 - Hudson / Jenkins dialogs creating wrong URLs

Change-Id: I206c4975979a7b646093ef883e11961461206661
Signed-off-by: Samuel Padgett <spadgett@us.ibm.com>