Geo HA doc: Add backend application server section

Closes #209738

See merge request gitlab-org/gitlab!26824

Update webpack and associated dependencies

See merge request gitlab-org/gitlab!26622

Separate geo_node and license entities into own class files

See merge request gitlab-org/gitlab!26685

Refactor workhorse passthrough URL checker

See merge request gitlab-org/gitlab!26157

Update selenium link in example doc

Closes #205398

See merge request gitlab-org/gitlab!26758

Fix link to moved project under database_review.md

See merge request gitlab-org/gitlab!26235

Labels - CSS clean up

Closes #208231

See merge request gitlab-org/gitlab!26747

Remove `remote_mirrors_api` feature flag

See merge request gitlab-org/gitlab!26695

Bump minimum node version to v10.13.0

See merge request gitlab-org/gitlab!26831

Update several frontend dependencies

See merge request gitlab-org/gitlab!26755

Update HAML todo file

See merge request gitlab-org/gitlab!26470

Update deprecated name method in mass_insert.md

See merge request gitlab-org/gitlab!26745

Validate audit event ID on Groups API

See merge request gitlab-org/gitlab!26659

Add presence and type validation on Audit Event ID when getting a
Group-level audit event. This also makes it consistent with a similar
API call to get Instance-level audit event.

Add a separate logger for Sidekiq clients

See merge request gitlab-org/gitlab!26586

Add new basic mentions component

See merge request gitlab-org/gitlab!26160

Migrate tree_list_spec from karma to jest

See merge request gitlab-org/gitlab!26681

Resolve "Prevent projects from being shared outside a GMA group" - forking case

Closes #12420

See merge request gitlab-org/gitlab!26456

Added a padding-right to items in subgroup list

See merge request gitlab-org/gitlab!26791

Move SCIM API Grape Entities into ::EE::API::Entities namespace

See merge request gitlab-org/gitlab!26706

Fix spinner size for groups list

See merge request gitlab-org/gitlab!26805

Add index services on template

See merge request gitlab-org/gitlab!26771

Update index.md - network policy updates

See merge request gitlab-org/gitlab!26667

Move whitelist specs

See merge request gitlab-org/gitlab!26673

Sidekiq client, in our case Rails, can also emit log messages related
to sidekiq jobs.

Instead of having these messages printed to STDOUT (which results in
`production.log`), this changes the Sidekiq.logger to a separate
writing to `log/sidekiq_client`. This allows us to ingest these
messages in the same index as the messages the sidekiq process
emits. Having them in the same index allows us to gather statistics
about jobs that haven't been processed.

This tracks exceptions for updating namespace statistics in Sentry
instead of logs.

Merge branch '10361-disable-pull-mirroring-for-private-projects-without-a-premium-silver-subscription-on-march-22' into 'master'

Disable free CI/CD for GitHub for private projects without a paid subscription on March 22

See merge request gitlab-org/gitlab!26170

Add docs about e2e tags

See merge request gitlab-org/gitlab!25485