Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/53259

User not defined in PostReceive#process_project_changes

Closes #51335

See merge request gitlab-org/gitlab-ce!22519

Adds trace of each access check when git push times out

Closes #42790

See merge request gitlab-org/gitlab-ce!22265

Upgrade Prometheus to 2.4.3 and Alertmanager to 0.15.2

See merge request gitlab-org/gitlab-ce!22600

docs add first draft for runbook topic

See merge request gitlab-org/gitlab-ce!22588

# Conflicts:
#	doc/topics/runbooks/index.md

Update review apps testing guide

See merge request gitlab-org/gitlab-ce!22619

E2E Test - LDAP login with SSL

Closes gitlab-qa#59

See merge request gitlab-org/gitlab-ce!22574

Prettify all the things (part 4)

See merge request gitlab-org/gitlab-ce!22253

Resolve circular dependencies in merge request widget

See merge request gitlab-org/gitlab-ce!22605

Resolve "No longer require a deploy to start Prometheus monitoring"

Closes #45068

See merge request gitlab-org/gitlab-ce!22401

Review Apps are now deployed automatically.
Note that if auth fails you might need to stop and redeploy the app.

Feature/add license to project API

See merge request gitlab-org/gitlab-ce!21606

Update content of visible tooltips

See merge request gitlab-org/gitlab-ce!22504

CE: Put EE routes in EE files under EE directories

See merge request gitlab-org/gitlab-ce!22376

Automatically navigate to last board visited

See merge request gitlab-org/gitlab-ce!22430

Improvement to ci/yaml documentation

See merge request gitlab-org/gitlab-ce!22613

Resolve "Adding issues from group/project board is not allowed for project-level users"

See merge request gitlab-org/gitlab-ce!22557

Resolve "Filter by `None`/`Any` for assignee_id in issues/mrs API"

Closes #52384

See merge request gitlab-org/gitlab-ce!22598

Preload user status for label events

Closes #53164

See merge request gitlab-org/gitlab-ce!22609

Support backward compatibility when introduce new failure reason

See merge request gitlab-org/gitlab-ce!22566

Link button in markdown editor recognize URLs

Closes #52115

See merge request gitlab-org/gitlab-ce!22547

Fix stage dropdown rendering only in English

Closes #53133

See merge request gitlab-org/gitlab-ce!22604

Fix inaccessible dropdown for code-less projects

Closes #51306

See merge request gitlab-org/gitlab-ce!22137

Remove .katex-display from selector

See merge request gitlab-org/gitlab-ce!22580