added interop conf & button, improved ProjectService (unique ecm:name...)
- improved ProjectService : ecm:name must now be unique & tested,
   display error msg, patched getContainer, handled version & proxy & deleted...
- reqeval : ReqEvals is now OrderableFolder, patched interop update to
   respect JSON order
- interop : added conf using server descriptor, added button,
   catched WebAppEx so displays errors better
- utils : moved to owsi-commons