(CE Port) Add MR table component for Productivity Analytics

See merge request gitlab-org/gitlab-ce!30975

Fix error rendering submodules in MR diffs when there is no .gitmodules

See merge request gitlab-org/gitlab-ce!31162

Resolve "Conan Skeleton API"

See merge request gitlab-org/gitlab-ee!14805

The initial structure for the Conan API endpoints
is set up to allow for future API development.

Regenerate gitlab.pot file

See merge request gitlab-org/gitlab-ee!14856

Prefer `flat_map` over `map` + `flatten`

See merge request gitlab-org/gitlab-ce!31144

Convert several occurrences of `map` + `flatten` to
`flat_map` where applicable.

Prefer `flat_map` over `map` + `flatten`

See merge request gitlab-org/gitlab-ee!14661

Without this change, we get a NoMethodError on nil

Add development documentation on label filtering

Closes #49651

See merge request gitlab-org/gitlab-ce!30741

Update dependency @gitlab/ui to ^5.9.0

See merge request gitlab-org/gitlab-ce!31153

The GitLab UI update changed the spinner selector from `spinner` to
`gl-spinner`, so we need to update it, so that our tests won't fail.

Update dependency @gitlab/ui to ^5.9.0

See merge request gitlab-org/gitlab-ee!14853

The GitLab UI update changed the spinner selector from `spinner` to
`gl-spinner`, so we need to update it, so that our tests won't fail.

Extract Auto DevOps deploy functions in a base image

Closes #50286

See merge request gitlab-org/gitlab-ce!30404

Adds event enum column to DesignsVersions join table

See merge request gitlab-org/gitlab-ce!30745

Support indentation in the markdown editor

Closes #25070

See merge request gitlab-org/gitlab-ce!28914

It will be hooked up to the markdown editor later

Ensure Warden triggers after_authentication callback

See merge request gitlab-org/gitlab-ce!31138

By not triggering the callback:
- ActiveSession lookup keys are not cleaned
- Devise also misses its hook related to session cleanup

CE port of "Stablize editing scope label spec - retry if dropdown is not visible"

See merge request gitlab-org/gitlab-ce!31145

Stablize editing scope label spec - retry if dropdown is not visible

Closes gitlab-org/quality/nightly#117

See merge request gitlab-org/gitlab-ee!14841

Respect alt email when sending group access notifications

See merge request gitlab-org/gitlab-ce!31089

When sending access granted/rejected emails we should also respect
custom emails set for groups/sub-groups

Feature test for gfm embedding metrics

See merge request gitlab-org/gitlab-ce!30621