add related issues component to Epic

Closes #3551

See merge request gitlab-org/gitlab-ee!3302

* origin/fix-populate-for-networks-range-spec:
  removed the dependency on another background job running inline

[ci skip]

[ci skip]

this test should be only testing for code that is in the
described_class, not on another job that run afterward.

I also think that the coverage of this task is sufficient with
the CreateForkNetworkMembershipsRange tests.

* master: (22 commits)
  Delete epic
  Fix markdown for other components
  Fixup markdown document structure
  Correct typo: bundle -> bundled
  Prune setting of postgresql['sql_user_password']
  [Geo][error handling] [address review comments] catching some errors
  Move EE-only /app/workers files under top-level /ee directory
  Fix approvals responsive wrapping on mobile
  EE port of enable-scss-lint-unnecessary-mantissa
  Update docs for ajusted queries
  Update queries to remove duplicate entries
  Geo: address review comments
  Geo: Fix static analysis
  update changelog
  GEO: Error handling - Specs
  GEO: Address review comments
  Geo: Implement a download to a temporary repo
  Geo: Add specs for error handling
  Geo: Add progressive backoff for file download retries[ci skip]
  Geo Add forced redownload for some type of errors[ci skip]
  ...

Fix approvals responsive wrapping on mobile

Closes #3333

See merge request gitlab-org/gitlab-ee!3372

Update queries to remove duplicate entries

See merge request gitlab-org/gitlab-ee!3297

Correct typo: bundle -> bundled

Closes gitlab-org/build/team-tasks#43

See merge request gitlab-org/gitlab-ee!3380

Prune setting of postgresql['sql_user_password']

Closes gitlab-org/build/team-tasks#33

See merge request gitlab-org/gitlab-ee!3379

Delete epic

Closes #3552

See merge request gitlab-org/gitlab-ee!3141

Fixup markdown document structure

Closes gitlab-org/build/team-tasks#38

See merge request gitlab-org/gitlab-ee!3381

Fix markdown for other components

Closes gitlab-org/build/team-tasks#42

See merge request gitlab-org/gitlab-ee!3382

EE port of enable-scss-lint-unnecessary-mantissa

See merge request gitlab-org/gitlab-ee!3330

Move ee-only workers to top-level ee directory

See merge request gitlab-org/gitlab-ee!3367

This seems to have been intended to be a list, fix the markup so it is
one.

https://gitlab.com/gitlab-org/build/team-tasks/issues/42

Geo: Improve error handling

Closes #3119

See merge request gitlab-org/gitlab-ee!3290

Pgbouncer is its own section.

https://gitlab.com/gitlab-org/build/team-tasks/issues/38

https://gitlab.com/gitlab-org/build/team-tasks/issues/43

This was being set twice.  It's just messy.

Closes https://gitlab.com/gitlab-org/build/team-tasks/issues/33

Resolve "Error reading commit status in JenkinsDeprecatedService"

Closes #3335

See merge request gitlab-org/gitlab-ee!3363

Paginated epics list

Closes #3553

See merge request gitlab-org/gitlab-ee!3254

[EE] Change Page::Main::Entry to only visit an entrypoint and introduce…

See merge request gitlab-org/gitlab-ee!3371

Mention PostgreSQL replication changes in Geo update documentation

See merge request gitlab-org/gitlab-ee!3349

Export project, projectAvatar and projectImport as ES6 modules

See merge request gitlab-org/gitlab-ee!3373