Add environment_scope column to ci_variables table

See merge request !12363

* ee/master: (847 commits)
  Job's review
  typo
  fix link, notes > note
  copyedit
  Fix issuable finder and helper conflicts
  resolve `app/views/projects/issues/_nav_btns.html.haml` resolve `spec/helpers/groups_helper_spec.rb`
  Resolve conflict in spec/services/git_push_service_spec.rb
  Adds logging when mirror starts and finishes
  Eagerly create a milestone that is used in a feature spec
  Don't resolve fork relationships for projects pending delete
  Adjust readme repo width
  Resolve "Issue Board -> "Remove from board" button when viewing an issue gives js error and fails"
  Fix rubocop offenses
  Make entrypoint and command keys to be array of strings
  copyedit, add image
  Add issuable-list class to shared mr/issue lists to fix new responsive layout
  New navigation breadcrumbs
  Restore timeago translations in renderTimeago.
  Mirrors should not attempt to sync while pending delete
  Fix curl example paths (missing the 'files' segment)
  ...

Add more logging to repository mirror feature

See merge request !2292

CE Upstream - Monday

See merge request !2325

Add overview and use-cases for Issue Boards EE-only features

See merge request !2296

Move some EE-only KubernetesService code to a prepended module

Closes #2525

See merge request !2168

resolve `spec/helpers/groups_helper_spec.rb`

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

CE upstream: Friday

Closes #225, gitaly#201, and gitlab-ce#33172

See merge request !2313

Fixed typo in gitlab_flow.md

See merge request !12561

Replaces 'dashboard/new-project.feature' spinach with rspec

See merge request !12550

Eagerly create a milestone that is used in a feature spec

Closes #34609

See merge request !12604

Fix curl example paths (missing the 'files' segment)

See merge request !12588

Use correct milestones for filtering on Group Issues

Closes #34116

See merge request !12374

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

Remove unnecessary pull command from codeclimate job

See merge request !12583

Improves mirror force update button transparency

See merge request !2299

Adjust readme repo width

See merge request !12585

Make clear that Go 1.8 is required since GitLab 9.2

Closes #34525

See merge request !12564

Fix performance bar specs

See merge request !12225

Merge branch '34097-issue-board-remove-from-board-button-when-viewing-an-issue-gives-js-error-and-fails' into 'master'

Resolve "Issue Board -> "Remove from board" button when viewing an issue gives js error and fails"

Closes #34097

See merge request !12430

Make issuable sidebar setSidebarHeight more efficient

See merge request !12252

Make entrypoint and command keys to be array of strings

See merge request !12536

Enable webpack code splitting

Closes #32989

See merge request !12032

Add issuable-list class to shared mr/issue lists to fix new responsive layout

See merge request !12591

Remove empty afterEach() from issue_show app_spec.js

See merge request !12577