Forwarding gitlab JobEvents to BuildEvents does not make sense

[finkandreas]

webhooks/gitlab/gitlab.go

Line 214 in 69430a8

return eventParsing(BuildEvents, events, payload)

Forwarding this event as a BuildEvents requires that the user subscribes to both JobEvents and BuildEvents when they call hook.Parse(...).
Otherwise the end up with the error message in

webhooks/gitlab/gitlab.go

Line 153 in 69430a8

return nil, ErrEventNotFound

This leads to confusing code, when one wants to actually subscribe to JobEvents, but must handle it later on as gitlab.BuildEventPayload.