Rails 5: support schema t.index for mysql

See merge request gitlab-org/gitlab-ce!21485

Fix wording in Danger warning about MRs to non-master

See merge request gitlab-org/gitlab-ce!21493

Unused CSS part exists in mobile CSS framework

Closes #50879

See merge request gitlab-org/gitlab-ce!21439

Set issuable_sort and diff_view cookies to secure when possible

Closes #49120

See merge request gitlab-org/gitlab-ce!21442

Uploads to wiki stored inside the wiki git repository

Closes #33475

See merge request gitlab-org/gitlab-ce!21362

Fix QA ObjectStorage not inheriting from Test::Instance::All

See merge request gitlab-org/gitlab-ce!21494

If it's most of the time, then it's not all.

Disable Web IDE button if user is not allowed to push the source branch.

Closes #45026

See merge request gitlab-org/gitlab-ce!21288

Add artifact information in job API

See merge request gitlab-org/gitlab-ce!21328

Closes #49120

Make cache vs artifacts section more visible, and minor enhancements to text.

See merge request gitlab-org/gitlab-ce!21491

Resolve "Should we still use Flay?"

Closes #44750

See merge request gitlab-org/gitlab-ce!21476

Update installation and update docs for 11.3

See merge request gitlab-org/gitlab-ce!21481

Start validating against the exciting JSON schema for the job controller JSON
response.

The JSON schema is not complete since there is quite a lot missing, this will
be done in a separate issue.

gitlab-org/gitlab-ce#50101

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

Cleanup of api settings.md doc

See merge request gitlab-org/gitlab-ce!21474

Move badge settings to general settings

Closes #46590

See merge request gitlab-org/gitlab-ce!21333

Extract EE-specific lines from Gitlab::Email::Handler

See merge request gitlab-org/gitlab-ce!21358

Add JSON logging for Bitbucket Server importer

See merge request gitlab-org/gitlab-ce!21378

Fix spacing, typos, add missing settings, and remove deprecated ones.

Add JUnit Java examples in docs

See merge request gitlab-org/gitlab-ce!21472

Bump GitLab Pages to v1.1.0

See merge request gitlab-org/gitlab-ce!21419

Hide PAT creation advice for HTTP clone if PAT exists

Closes #44111

See merge request gitlab-org/gitlab-ce!18208

Added atom feed for tags

Closes #2635

See merge request gitlab-org/gitlab-ce!21428

Add updated ce images to kubernetes install doc

See merge request gitlab-org/gitlab-ce!21418

Docs port ee community contributions

See merge request gitlab-org/gitlab-ce!21311