Optimize namespace.has_parent?

See merge request gitlab-org/gitlab!17749

We can avoid doing an extra SQL query for loading parent when
only checking if parent exists.

Because in Github import service we use nested setting of groups
(so there is a situation when `group` is set but `group_id` not),
we check presence of both group_id and group.

Productivity Analytics: Use datetime for merged_at_after and merged_at_before

Closes #33350

See merge request gitlab-org/gitlab!18150

- Change merged_at_after
and merged_at_before to datetime

Refactor `readiness` and `liveness` probes and add them to `sidekiq|web_exporter`

See merge request gitlab-org/gitlab!17960

This adds liveness and readiness probes
on sidekiq|web_exporters.

This also improves readiness probe
to return a success if at least one
probe from the group (like Gitaly)
returns success.

Add automated test  for the burndown chart starter feature

Closes gitlab-org/quality/testcases#175

See merge request gitlab-org/gitlab!18009

Use separate routes for sign in and sign up

See merge request gitlab-org/gitlab!16482

When the feature flag is enabled, we want to show
a different layout for sign up.
Otherwise, we redirect to the register tab on our
original sign up flow

Update display_deployment_debug

See merge request gitlab-org/gitlab!18100

Services for persisting Cycle Analytics group stages

Closes #32570

See merge request gitlab-org/gitlab!17588

This changes introduces service objects for creating, updating and
finding cycle analytics group stages.

Quarantine test that fails intermittently

See merge request gitlab-org/gitlab!18195

Update project milestone resource with new attributes and the
ability to fabricate a milestone with or without start and due
date.

Also, add new elements and methods to it.

Finally, update the autoload of it to reflect the new name.

Fix moved help url for license compliance

See merge request gitlab-org/gitlab!18147

Fix moved help url for geo replication configuration

See merge request gitlab-org/gitlab!18145

Docs: mention feature renamed in 12.4

See merge request gitlab-org/gitlab!18182

Remove redundant comment and cop disable

See merge request gitlab-org/gitlab!18121

Make sure project insights stick on its own

Closes #33337

See merge request gitlab-org/gitlab!18082

Removing cleanup:repo, cleanup:dirs

Closes #24633

See merge request gitlab-org/gitlab!18087

Ignore incoming emails with X-Autoreply

See merge request gitlab-org/gitlab!18118

Some messages may not contains the RFC-compliant Auto-Submitted
header, instead they may use X-Autoreply header for automated replies
(e.g. out of office emails).

Remove ce-ee merge documentation

See merge request gitlab-org/gitlab!18096

Enable frozen string for ee/spec

See merge request gitlab-org/gitlab!18167

Follow-up to:

https://gitlab.com/gitlab-org/gitlab/merge_requests/17754

Abort MWPS when FF only merge is impossible

See merge request gitlab-org/gitlab!17886

Abort MWPS merge requests when pushing on target branches
for projects with FF only enabled.
Notify MR author with a TODO.