Update docs for Helm 3 GitLab-managed apps

See merge request gitlab-org/gitlab!47333

Make small changes to the work already done by engineering to bring
it closer to GitLab tone and style.

Prettify mapping builder form

See merge request gitlab-org/gitlab!47512

Define naming convention for custom database constraints

See merge request gitlab-org/gitlab!47076

Add Google Tag Manager to sign in/up and trial pages

See merge request gitlab-org/gitlab!38395

Add warning against ElastiCache 6

See merge request gitlab-org/gitlab!47667

Block git push over HTTP when database is in read-only mode

See merge request gitlab-org/gitlab!47673

Enable `vue_group_members_list` FF by default

See merge request gitlab-org/gitlab!47427

Remove DOMContentLoaded Eventlisteners

See merge request gitlab-org/gitlab!47799

Resolve "Follow-up from "Add project email disabled field to issue type""

See merge request gitlab-org/gitlab!47233

Update docs add sidekiq worker to existing namespace

See merge request gitlab-org/gitlab!47679

Kubernetes 1.16+ only for v2 auto deploy

See merge request gitlab-org/gitlab!47740

Document header fuzzing with API Fuzzing

See merge request gitlab-org/gitlab!47727

Add gl-button class to buttons

See merge request gitlab-org/gitlab!47760

Merge branch '243607-background-migration-for-setting-jira-tracker-data-deployment-type' into 'master'

Background migration for setting Jira tracker data deployment type

See merge request gitlab-org/gitlab!46368

Make the description to be more explicit.

Cleaning up Vale issues in integration folder

See merge request gitlab-org/gitlab!47716

Tackling some crufty pages that aren't owned by any particular stage.
Clean up tone and style issues.

Refactor and UI-polish around activity calendar on user profile

See merge request gitlab-org/gitlab!47797

WIP Button redo for OKR

See merge request gitlab-org/gitlab!42626

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/229314

Enable caching of Git blobs even when signed in

See merge request gitlab-org/gitlab!47430

Add new text and tab name

See merge request gitlab-org/gitlab!47415

Adds path to mounting point and passes through

Update Gitaly version

See merge request gitlab-org/gitlab!47800

Remove DOMContentLoaded Eventlistener

See merge request gitlab-org/gitlab!47631

Reassign autodevops pages to Configure

See merge request gitlab-org/gitlab!47714

This work is done as part of Pajamas Migration

Make URLs in logs lines into clickable links

See merge request gitlab-org/gitlab!47532

Adds a disabled feature flag `ci_job_line_links` that allwos jobs to
render http and https urls as clickable links.

docs: Add navigation to DropLab plugins on Frontend Development Guide

See merge request gitlab-org/gitlab!47752

Add documentation for Instance Statistics feature flag

See merge request gitlab-org/gitlab!47454

Previously an MR added Instance Statistics documentation to describe
the feature flag and a warning about availability. The feature flag
has since been set to default_enable and the feature flag description
in the documentation was removed. This finishes the removal by
removing the warning.