Don't instantiate repo nor job on worker updates
Don't instantiate repo nor job on worker updates

We can create thos records based on job:started event. Also, links used
on the workers list are created from attributes only anyway.

fotinakis/travis-web,Tiger66639/travis-web,Tiger66639/travis-web,mjlambert/travis-web,mjlambert/travis-web,fauxton/travis-web,fauxton/travis-web,travis-ci/travis-web,fotinakis/travis-web,mjlambert/travis-web,2947721120/travis-web,Tiger66639/travis-web,fotinakis/travis-web,2947721120/travis-web,travis-ci/travis-web,travis-ci/travis-web,fotinakis/travis-web,fauxton/travis-web,travis-ci/travis-web,jlrigau/travis-web,Tiger66639/travis-web,mjlambert/travis-web,jlrigau/travis-web,jlrigau/travis-web,fauxton/travis-web,jlrigau/travis-web,2947721120/travis-web,2947721120/travis-web