Rescue from non-uuid to jobs#show and render 404

References
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https://www.pivotaltracker.com/story/show/82901700
Unused method argument - `error`. If it's necessary, use `_` or `_error` as an argument name to indicate that it won't be used. You can also write as `render_missing(*)` if you want the method to accept any arguments but don't care about them.