Resolve "Double closing system  notes when closing issue with Merge Request"

Closes #32546 and #32564

See merge request gitlab-org/gitlab-ce!17035

Don't attempt to update user tracked fields if database is in read-only

Closes gitlab-ee#4972

See merge request gitlab-org/gitlab-ce!17200

The tracking issue if this causes problems is
https://gitlab.com/gitlab-org/gitaly/issues/1028

[EE MR] Avoid slow File Lock checks when not used

See merge request gitlab-org/gitlab-ee!4548

Docs: Update all articles with the new layout (metadata from the frontmatter)

Closes #42831

See merge request gitlab-org/gitlab-ce!17187

Docs: Update all articles with the new layout (metadata from the frontmatter)

See merge request gitlab-org/gitlab-ee!4581

CE upstream - 2018-02-19 09:24 UTC

Closes #4825

See merge request gitlab-org/gitlab-ee!4592

Fix squash rebase not working when diff contained encoded data

Closes gitlab-ee#4960

See merge request gitlab-org/gitlab-ce!17205

[ci skip]

Also avoid double commit lookup during file lock check by reusing
memoized commits.

Backport webpack.config.js changes from EE

See merge request gitlab-org/gitlab-ce!17185

Fix Error 500 when viewing a commit with a GPG signature in Geo

Closes gitlab-ee#4825

See merge request gitlab-org/gitlab-ce!17207

Remember assignee when moving an issue

See merge request gitlab-org/gitlab-ce!17116

Sanitize extra blank spaces used when uploading a SSH key

Closes #40552

See merge request gitlab-org/gitlab-ce!17138

Closes gitlab-org/gitlab-ee#4825

When the applied diff contains UTF-8 or some other encoded data, the diff
returned back from the git process may be in ASCII-8BIT format. Writing this
data to stdin may fail if the data because stdin expects this data to be in
UTF-8. By switching the output to binmode, we ensure that the diff will
always be written as-is.

Closes gitlab-org/gitlab-ee#4960

Related to #41949

CE upstream - 2018-02-18 06:29 UTC

See merge request gitlab-org/gitlab-ee!4587

With Geo, attempting to view an endpoint with a user could result in an
Error 500 since Devise attempts to update the last sign-in IP and other
details.

Closes gitlab-org/gitlab-ee#4972

Update issue closing pattern to be more forgiving

Closes #17500

See merge request gitlab-org/gitlab-ce!17198

CE upstream - 2018-02-17 16:53 UTC

See merge request gitlab-org/gitlab-ee!4586

Revert "Merge branch 'expired-ci-artifacts' into 'master'"

See merge request gitlab-org/gitlab-ce!17193

CE upstream - 2018-02-17 09:44 UTC

See merge request gitlab-org/gitlab-ee!4584

CE upstream - 2018-02-17 06:13 UTC

See merge request gitlab-org/gitlab-ee!4583

Don't cache a nil repository root ref to prevent caching issues

See merge request gitlab-org/gitlab-ce!17179

CE upstream - 2018-02-16 15:23 UTC

Closes gitlab-ce#42939

See merge request gitlab-org/gitlab-ee!4579

Resolve "spec/requests/api/project_import_spec.rb fails"

Closes #43345

See merge request gitlab-org/gitlab-ce!17184

Fix order dependencies in some specs

Closes #43296

See merge request gitlab-org/gitlab-ce!17189

This reverts merge request !16578