When listing epics in a group, include also epics from all group's
subgroups. Also `by_iids` filter is removed from EpicsFinder because
filtering by iid (which is scoped to single group) doesn't make sense
since subgroups are included too.

Close #4301

gitlab-ce!16708 port

Closes #4690

See merge request gitlab-org/gitlab-ee!4257

Preserve updated issue order to store when reorder is completed

Closes #4716

See merge request gitlab-org/gitlab-ee!4278

CE upstream - 2018-01-29 15:59 UTC

See merge request gitlab-org/gitlab-ee!4302

Merge branch '2877-code-quality-requires-codequality-json-to-be-the-only-artifact-file-in-the-job' into 'master'

Resolve "Code quality requires `codequality.json` to be the only artifact file in the job"

Closes #2877

See merge request gitlab-org/gitlab-ee!4203

# Conflicts:
#	qa/qa/page/project/show.rb

[ci skip]

Close and do not reload MR diffs when source branch is deleted

Closes #37775

See merge request gitlab-org/gitlab-ce!16690

Move mr_widget_merged into a vue file

Closes #42486

See merge request gitlab-org/gitlab-ce!16746

Don't allow Repository#log with limit zero

See merge request gitlab-org/gitlab-ce!16674

Merge branch '42521-docs-update-usage-of-force-option-when-running-the-restore-raketask' into 'master'

Resolve "Docs update usage of force option when running the restore raketask"

Closes #42521

See merge request gitlab-org/gitlab-ce!16759

[CE backport] Fix intermittently failed click in dropdown in QA

See merge request gitlab-org/gitlab-ce!16738

Fix intermittently failed click in dropdown in QA

See merge request gitlab-org/gitlab-ee!4271

[CE backport] Fix intermittent clone failure in QA

See merge request gitlab-org/gitlab-ce!16739

Fix avatar icon missing when Gravatar is disabled

Closes #34733 and #38715

See merge request gitlab-org/gitlab-ce!16681

Fix intermittent clone failure in QA

See merge request gitlab-org/gitlab-ee!4273

Create merge request factory

See merge request gitlab-org/gitlab-ce!15964

CE upstream - 2018-01-29 12:24 UTC

See merge request gitlab-org/gitlab-ee!4301

Fix intermittent QA error -- Expand button not bound to JS

See merge request gitlab-org/gitlab-ee!4270

[CE backport] Fix intermittent QA error -- Expand button not bound to JS

See merge request gitlab-org/gitlab-ce!16737

Fix QA new project creation click on incorrect namespace

See merge request gitlab-org/gitlab-ee!4269

[CE backport] Fix QA new project creation click on incorrect namespace

See merge request gitlab-org/gitlab-ce!16736

Replace $.post in awards handler with axios

See merge request gitlab-org/gitlab-ce!16685

Resolve "Update docker report `unapproved`"

Closes #4332

See merge request gitlab-org/gitlab-ee!4300

Resolve "MR "Check out branch" button should be disabled when the source branch is deleted"

Closes #42255

See merge request gitlab-org/gitlab-ce!16631

Improve Nginx configuration files

See merge request gitlab-org/gitlab-ce!16605

Mute notifications in the seeder to speed GDK development

See merge request gitlab-org/gitlab-ce!16747

Fix MR revert check when no merged_at is present

See merge request gitlab-org/gitlab-ce!16760