Backport from gitlab-org/gitlab-ee!6878

See merge request gitlab-org/gitlab-ce!23391

Fix API::Namespaces routing to accept namepaces with dots

See merge request gitlab-org/gitlab-ce!22912

Fix Red/Orange data link markdown

See merge request gitlab-org/gitlab-ce!23461

Resolve "Status Emoji currently replaces avatar on mobile"

Closes #51029

See merge request gitlab-org/gitlab-ce!23408

Remove broken link and fix markdown formatting

See merge request gitlab-org/gitlab-ce!23467

Improve wording on disabling impersonation in api/README

See merge request gitlab-org/gitlab-ce!23472

Externalize strings from `/app/views/invites`

See merge request gitlab-org/gitlab-ce!23205

Move drop_site_statistics to be a post deployment migration

See merge request gitlab-org/gitlab-ce!23455

Upgraded Codesandbox packages

Closes #51210

See merge request gitlab-org/gitlab-ce!23475

ci/config: generalize Config validation into Gitlab::Config:: module

See merge request gitlab-org/gitlab-ce!23443

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/51210

Fix typo in method name "silence_stderr"

See merge request gitlab-org/gitlab-ce!23468

Remove auto deactivation when failed to create a pipeline via pipeline schedules

Closes #41231

See merge request gitlab-org/gitlab-ce!22243

Resolve "mergeUrlParams wrong with fragment url"

Closes #54218

See merge request gitlab-org/gitlab-ce!23193

Extract shared timeline entry component

See merge request gitlab-org/gitlab-ce!23447

Resolve "Merge request refactor does not highlight selected line"

Closes #48496

See merge request gitlab-org/gitlab-ce!23121

Currently a dependency for grape `~> 1.1` is defined but gitlab does not work…

See merge request gitlab-org/gitlab-ce!23451

commit 0c00e52d339f8471a6ea425d5a4a59751a3f4a35
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 15:41:46 2018 +0900

    Update schedules.md

commit 0ae56bf5a0ba9254d2ebd4c846395113ae72d686
Merge: c143777c9f2 9ce28bf0
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Nov 30 15:38:01 2018 +0900

    Merge branch 'master-ce' into ignore-failed-pipeline-creation-on-pipeline-schedule

commit c143777c9f250c8075355ac07e9bae7b074665c3
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Nov 29 17:18:07 2018 +0900

    Fix coding offence

commit 7c816dfa634b5911310c67c285fc3c37d5f03517
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Nov 29 16:12:06 2018 +0900

    Improve spec quality

commit f78eed45e991123f8af4a7b24f041529bbb35e91
Merge: 96d20ce9144 a5f46278
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Nov 29 15:20:16 2018 +0900

    Merge branch 'master-ce' into ignore-failed-pipeline-creation-on-pipeline-schedule

commit 96d20ce914458f86e68b57bc1bb88ab8d27f010b
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Nov 27 16:25:42 2018 +0900

    Print pipeline error

commit 97842068b6cf1432cd400ead749843946b4f51ee
Merge: c2b015949af 2ee8c40f
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Nov 27 15:51:49 2018 +0900

    Merge branch 'master-ce' into ignore-failed-pipeline-creation-on-pipeline-schedule

commit c2b015949afb3ecc70cb057e2d13672f378c0d03
Merge: 3435137c17b fbbe5ccd
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Mon Nov 26 15:26:17 2018 +0900

    Merge branch 'master-ce' into ignore-failed-pipeline-creation-on-pipeline-schedule

commit 3435137c17b0ef03003e39dd08c7370fe916c626
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Nov 20 17:45:38 2018 +0900

    Track exception with Sentry

commit 3f01f10d3b7380f0e8ceb3a379d8b6c602e9d6ca
Merge: 5749c62355f 8a581d53
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Nov 20 17:12:41 2018 +0900

    Merge branch 'master-ce' into ignore-failed-pipeline-creation-on-pipeline-schedule

commit 5749c62355f8de62bb4e36ba1e351a78350607c1
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Nov 1 11:14:26 2018 +0900

    Create a pipeline even if it is corrupted

commit e01789890b6949b346d40fadef41aa133191cc43
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Oct 31 14:26:09 2018 +0900

    Improve production log message

commit f20d698a535f1dc70d5437c20b629fd1d956fb27
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Fri Oct 19 17:11:20 2018 +0900

    Fix typo

commit 01323b02ac41ec50bcf237409f2e3c5c214bbfc1
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Oct 18 14:46:44 2018 +0900

    Update documents

commit 460337bf4a7e67a35d6c342678b4cfe66710ad56
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Oct 10 13:21:26 2018 +0900

    Add changelog

commit a3c4711752fedebfacbdf52da94058524af3c9f4
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Oct 10 09:20:06 2018 +0900

    Ignore failed pipeline creation in pipeline schedule worker. Instead, logging the event.

Resolve "Add border around the repository file tree"

Closes #50264

See merge request gitlab-org/gitlab-ce!23018

Document how to create service account with admin

Closes #50005

See merge request gitlab-org/gitlab-ce!23362

Update robots.txt to exclude group_members and project_members, which can expose…

See merge request gitlab-org/gitlab-ce!23463

Update robots.txt to exclude group_members and project_members, which can expose sensitive user information to the web. Please see https://developers.google.com/search/reference/robots_txt for the correct wildcard format. 

Update Security developer workflow template

See merge request gitlab-org/gitlab-ce!23458

Add empty state for graphs with no values

Closes #53018

See merge request gitlab-org/gitlab-ce!22630