CE port of "e2e QA tests for Group level project templates"

See merge request gitlab-org/gitlab-ce!23987

e2e QA tests for Group level project templates

Closes #7392

See merge request gitlab-org/gitlab-ee!8863

Merge branch '50224-rails5-duplicate-key-value-violates-unique-constraint-index_gpg_signatures_on_commit_sha' into 'master'

Resolve "[Rails5] duplicate key value violates unique constraint "index_gpg_signatures_on_commit_sha""

Closes #50224

See merge request gitlab-org/gitlab-ce!24226

Adjusts duplicated line when commenting on unfolded diff lines (in the bottom)

Closes #56051

See merge request gitlab-org/gitlab-ce!24201

CE Backport: Add library helpers to use in Roadmap

See merge request gitlab-org/gitlab-ce!24232

Disable resolve conflicts for protected branches

Closes #53463

See merge request gitlab-org/gitlab-ce!23842

EE port of mr-widget-conflicts-protected-branch

Closes gitlab-ce#53463

See merge request gitlab-org/gitlab-ee!9052

Add feature spec for Release page MVC

See merge request gitlab-org/gitlab-ce!24143

Fixes missing margin in releases block

Closes #56076

See merge request gitlab-org/gitlab-ce!24229

Adds `newDate` helper to copy date object without keeping reference.
Adds negative length support in `getTimeframeWindowFrom` to go
back in time.

Document how to run frontend tests

Closes #53757

See merge request gitlab-org/gitlab-ce!24202

Add headers to files in the tree list on merge requests

Closes #54807

See merge request gitlab-org/gitlab-ce!23954

CE backport of "Track export issues CSV usage on GitLab.com with Snowplow"

See merge request gitlab-org/gitlab-ce!24217

Resolve "Track import issues CSV usage on GitLab.com with Snowplow"

Closes #8775

See merge request gitlab-org/gitlab-ee!9067

Without this, sometimes we will get a unique constraint violation about
GPG signatures on MySQL.

Remove comma from issuable email

See merge request gitlab-org/gitlab-ce!24218

Fixes z-index and margins of archived alert

Closes #56019

See merge request gitlab-org/gitlab-ce!24193

Wait for Web IDE commit animation

Closes #55972

See merge request gitlab-org/gitlab-ce!24196

ActiveRecord::Migration -> ActiveRecord::Migration[5.0] for
AddAlertManagerTokenToClustersApplicationPrometheus and EnqueuePrometheusUpdates

See merge request gitlab-org/gitlab-ee!9049

Add tests for Gitlab::Vulnerabilities classes

Closes #8707

See merge request gitlab-org/gitlab-ee!9025

EE MR: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9067

Improve `bin/secpick` script and add more options

See merge request gitlab-org/gitlab-ce!24117