Issue export CSV includes "Weight" and "Locked"

Merged James Edwards-Jones requested to merge jej/add-weight-to-csv-export into master

What

Adds Weight and Locked to CSV export of issues

Why

Weight was omitted from https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1126, probably because that MR started as a CE MR. Similarly Locked could be included.

Does this MR meet the acceptance criteria?

Related

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/2172 and https://gitlab.com/gitlab-org/gitlab-ee/issues/2287

Edited by Grzegorz Bizon