This will allow the Koding app to enable the integration itself once is has authorized an admin user using the application secrets.

Expose project share expiration_date field on API

closes #22382

See merge request !6484

Expose pipeline data in builds API

Exposes pipeline data in builds API, as suggested by #22367.
The fields exposed were 'id', 'status', 'ref', and 'sha'.

Closes #22367

See merge request !6502

add pipeline ref, sha, and status to the build API response

add tests of build API (pipeline data)

change API documentation for builds API

log change to builds API in CHANGELOG

CHANGELOG: add reference to pull request and contributor's name

With the introduction of repository storages validations it becomes
necessary to add the flag `SKIP_STORAGE_VALIDATION` to the gitlab-shell
install command, since that command will create the storage paths

Fix typo `CSFR` -> `CSRF` in the OAuth2 doc



See merge request !6538

Add university content

## What does this MR do?

Imports gitlab-org/University content into doc/university to deprecate university.gitlab.com and access it from doc.gitlab.com/universtiy.

## Are there points in the code the reviewer needs to double check?

That there are no broken links.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added

## What are the relevant issue numbers?

#22449

See merge request !6520

Signed-off-by: Rémy Coutable <remy@rymai.me>