Fix bug setting http headers in Files API

See merge request gitlab-org/gitlab-ce!20938

Merge branch '49499-list-of-projects-not-loading-when-trying-to-create-an-issue-from-a-board-typeerror' into 'master'

Resolve "List of projects not loading when trying to create an issue from a board (TypeError)"

Closes #49499

See merge request gitlab-org/gitlab-ce!20955

Port of EE-translations

See merge request gitlab-org/gitlab-ce!20960

Allow users to set a status

Closes #35463

See merge request gitlab-org/gitlab-ce!20614

Resolve "Making instance-wide data tools more accessible"

Closes #41416 and #48507

See merge request gitlab-org/gitlab-ce!20874

New Crowdin translations

See merge request gitlab-org/gitlab-ee!6706

Remove fixes for MR refactor regressions from master

See merge request gitlab-org/gitlab-ce!20920

correct error message on helm tiller installation timeout

See merge request gitlab-org/gitlab-ce!20683

Add `runner_unsupported` CI failure

See merge request gitlab-org/gitlab-ce!20664

This reverts commit 740ae2d1, reversing
changes made to 1ba47de5.

This reverts commit 6c6988cb, reversing
changes made to 0d488c7b.

This reverts commit 5ba542b1, reversing
changes made to 32c831ea.

This reverts commit ced005f3, reversing
changes made to 9b01b293.

This reverts commit 2411ecb5, reversing
changes made to 58a0df7e.

This reverts commit 9c121352, reversing
changes made to c1b335e0.

Create update guide from 11.1 to 11.2

See merge request gitlab-org/gitlab-ce!20945

update installation docs branches for source installations

See merge request gitlab-org/gitlab-ce!20944

Support multiple scopes when authing container registry scopes

Closes #48968

See merge request gitlab-org/gitlab-ce!20617

Add support for ssh certificates (internal API)

Closes #34572

See merge request gitlab-org/gitlab-ce!19911

Update test-and-deploy-python-application-to-heroku.md

See merge request gitlab-org/gitlab-ce!20921

Rails5: fix flaky spec

See merge request gitlab-org/gitlab-ce!20953

Resolve "Allow issue's Internal ID (`iid`) to be set when creating via the API"

Closes #1756

See merge request gitlab-org/gitlab-ce!20626

Fix a few disrepencies between CE and EE in the lines ordering

See merge request gitlab-org/gitlab-ce!20937