These jobs may legitimately fail because the endpoint just isn't there any
more. We don't want them cluttering up the Sidekiq morgue in that case - it's
currently full on GitLab.com.
* implemented logging of project and system web hooks
* implemented UI for user area (project hooks)
* implemented UI for admin area (system hooks)
* implemented retry of logged webhook
* NOT imeplemented log remover
gfyoung