* master: (56 commits)
  File view buttons
  Don't reset the session when the example failed, because we need capybara-screenshot to have access to it
  Resolve "MR comment + system note highlight don't have the same width"
  Add feature spec for dashboard state filter tabs
  Wording of Mysql support.
  a new feature checklist and more elaborate documentation requirements
  Filter archived project in API v3 only if param present
  Revert to using links instead of buttons in Issuable Index tabs.
  Do not run the codeclimate job on docs-only changes
  Only show gray footer space if environment actions exist
  Migrate Gitlab::Git::Blob.find to Gitaly
  Backport filtered search lazy token consistent state fix
  Add a comment explaining how the branch clean up happens
  Fix Github::Representation::PullRequest#source_branch_exists?
  Add CHANGELOG
  Fix GitHub importer performance on branch existence check
  Rebuild the dynamic path before validating it
  Rename stage ref migration specs to match a class name
  Enable Style/DotPosition Rubocop 👮
  Revert "Merge branch 'winh-merge-request-related-issues' into 'master'"
  ...

Conflicts:
	db/post_migrate/20170526185921_migrate_build_stage_reference.rb

clarify NFS option details

See merge request !12257

File view buttons

Closes #25102

See merge request !12111

Only show gray footer space if environment actions exist

Closes #33853

See merge request !12315

Filter archived project in API only if param present

Closes #32301

See merge request !12245

Don't reset the session when the example failed to fix capybara-screenshot

See merge request !12370

Don't reset the session when the example failed, because we need capybara-screenshot to have access to it

Resolve "Issue and MR state tabs don't work on dashboard"

Closes #33833

See merge request !12278

Resolve "MR comment + system note highlight don't have the same width"

Closes #33917

See merge request !12364

Migrate Gitlab::Git::Blob.find to Gitaly

See merge request !12104

Fixed commit list system not gradient

Closes #33896

See merge request !12306

Do not run the codeclimate job on docs-only changes

See merge request !12360

Add missing link in Redis HA source docs

Closes #33374

See merge request !12342

a new feature checklist and more elaborate documentation requirements

Closes #33750

See merge request !12220

Backport filtered search lazy token consistent state fix

See merge request !12335

Supplement Simplified Chinese translation of Project Page & Repository Page

Closes #33441

See merge request !11994

Fix GitHub importer performance on branch existence check

Closes #33259

See merge request !12324

Improve build stages reference migration

Closes #33866

See merge request !12337

Rebuild the dynamic path before validating it

Closes #33746

See merge request !12213

Backport "check_project_feature_available!" from EE and use it for CE controllers

See merge request !12305

From https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/2142

Didn't actually fix the spec but is worthwhile to get things in a
consistent state no matter how fast the test runs.

Disable statement timeout in CI pipelines migration

See merge request !12268

Revert "Merge branch 'winh-merge-request-related-issues' into 'master'"

See merge request !12354