Update project_services.md

Closes #3253

See merge request !2767

EE-Port: Handle creating a nested group on MySQL correctly

See merge request !2766

Add a health check for the state of Geo replication lag in secondary

Closes #1929

See merge request !1610

Note about duplicating repository config on secondary.

See merge request !2764

Use proper logging for artifacts rake task

See merge request !2762

Fix approvals before merge error while importing projects

Closes #2617

See merge request !2763

Since we don't support nested groups on MySQL, raise an error
explaining that on import instead of trying anyway.

Using logging we get a known structure, and the time of the message.
Last change removed the unused `order` statement. This is not used
because `find_each` uses the primary key anyway.

Add event metrics to mirrors and remote mirrors.

See merge request !2744

Log Geo update delay and download times of repository sync

Closes #3020

See merge request !2721

EE - Convert Protected Branches feature JS code to ES6

See merge request !2481

CE upstream: Thursday

Closes gitaly#488 and gitlab-ce#36622

See merge request !2752

Reconfigure required for `db_key_base` update

See merge request !2754

Port of font-weight-adjusted to EE !12896

See merge request !2749

Support Elasticsearch v5.1 - v5.5

See merge request !2751

Display 'Check namespace plan' checkbox in admin area on GitLab.com, staging, or in development

See merge request !2750

Fix old MR diffs

Closes #36516

See merge request !13744

Add an option to list only archived projects

Closes #35994

See merge request !13492

For some old merge requests, we don't have enough information to figure out the
old blob and the new blob for the file. This means that we can't highlight the
diff correctly, but we can still display it without highlighting.

Search for issues with multiple assignees

See merge request !1889

Support simple string LDAP attribute specifications, and search for name rather…

See merge request !2746

Delegate Repository::branch_exists? and ref_exists? to Gitlab::Git

Closes gitaly#488

See merge request !13725

fix Merge request reference in merge commit is not global

Closes #36262

See merge request !13518

Resolve transient failures related to testing migrations

Closes #36745

See merge request !13761

Expose CI_PIPELINE_SOURCE on CI jobs

Closes #34165

See merge request !13759