Disable invisible_captcha feature flag for signup specs

See merge request gitlab-org/gitlab-ee!15199

Documentation: tell when push options were introduced

See merge request gitlab-org/gitlab-ce!31836

Update/expand docs for the Dependency List.

See merge request gitlab-org/gitlab-ce!31147

These changes align the docs with the features introduced in [1].

See also the [issue tracking the documentation changes][2].

[1]: https://gitlab.com/gitlab-org/gitlab-ee/issues/10077
[2]: https://gitlab.com/gitlab-org/gitlab-ee/issues/12986

Update description templates screenshots

See merge request gitlab-org/gitlab-ce!31623

Updated screenshots about description templates in the project
settings documentation.

Closes #https://gitlab.com/gitlab-org/gitlab-ce/issues/65738

CE backport for gitlab-org/gitlab-ee!14097: Add merge train helper text to merge request widget

See merge request gitlab-org/gitlab-ce!30686

Add merge train helper text to merge request widget

Closes #11982

See merge request gitlab-org/gitlab-ee!14097

Update text: Cycle -> Productivity

See merge request gitlab-org/gitlab-ce!31830

Changes to cycle analytics docs

See merge request gitlab-org/gitlab-ce!31572

Add missing (FREE ONLY) docs tier badge

See merge request gitlab-org/gitlab-ce!31755

Note that assigning many people is starter feature

See merge request gitlab-org/gitlab-ce!30700

Update Mattermost System Console settings page URL for webhooks

See merge request gitlab-org/gitlab-ce!31334

Add docs page for productivity_analytics

See merge request gitlab-org/gitlab-ce!31460

Make ruby 2.6 the officially supported version

See merge request gitlab-org/gitlab-ce!31675

Merge branch '64950-move-download-csv-button-functionality-in-metrics-dashboard-cards-into-the-dropdown' into 'master'

Move download CSV functionality to dropdown in metrics

Closes #64950

See merge request gitlab-org/gitlab-ce!31679

This MR adds the functionality to download metrics data
as CSV. It also removes the exportMetricsToCsvEnabled feature
flag which was used before the dropdown was implemented to
display a button.

Open source alternative to reCAPTCHA for GitLab.com registration

See merge request gitlab-org/gitlab-ce!31625