Add developer docs for bulk-inserts

Closes #207993

See merge request gitlab-org/gitlab!26367

First iteration.

Merge branch '207808-geo-bug-filedownloaddispatchworker-may-sometimes-excessively-resync-files-and-block-new' into 'master'

Use uncached SQL queries for Geo long running workers

Closes #207808

See merge request gitlab-org/gitlab!26187

Add context to SessionsController

See merge request gitlab-org/gitlab!26904

Use process-wide memory cache for feature flags

See merge request gitlab-org/gitlab!26935

Merge branch '196688-replace-underscore-with-lodash-for-app-assets-javascripts-deploy_keys' into 'master'

Resolve "Replace underscore with lodash for ./app/assets/javascripts/deploy_keys"

Closes #196688

See merge request gitlab-org/gitlab!24965

Allow packages multipart uploads

See merge request gitlab-org/gitlab!26387

Docs: Clarify user association on import

See merge request gitlab-org/gitlab!27019

Remove unneeded changelog entry

See merge request gitlab-org/gitlab!27014

Add issue_stats to milestones

See merge request gitlab-org/gitlab!19937

Update project import limit

See merge request gitlab-org/gitlab!26903

Revert "Merge branch '202639' into 'master'"

See merge request gitlab-org/gitlab!26955

This was a developer-facing change to a service's internal logic and as
such doesn't need a changelog entry

Allow searching of snippet description

See merge request gitlab-org/gitlab!25961

Removed duplicate instructions under "# Create and add your SSH public key".

See merge request gitlab-org/gitlab!25930

Removed section and points under Heading "# Create and add your SSH public key" due to being duplicate to the sections below.

Do not add initial empty value in create cluster dropdown

See merge request gitlab-org/gitlab!26927

Fix a markdownlint offense in doc/development/i18n/proofreader.md

Closes #210044

See merge request gitlab-org/gitlab!27007

Version Control for Snippets: Development of the Migration Plan (MVP)

See merge request gitlab-org/gitlab!25905

Signed-off-by: Rémy Coutable <remy@rymai.me>

Fix capybara screenshots for rails

See merge request gitlab-org/gitlab!27002

Update proofreader.md

See merge request gitlab-org/gitlab!26765

Fe top n labels endpoint

Closes #196584

See merge request gitlab-org/gitlab!24853

Document npm package requests forwarding

See merge request gitlab-org/gitlab!26888

When we switched from a single-threaded application server (Unicorn) to
a multithreaded one (Puma), we did not realize that Puma often reaps
threads after a request is done and recreates them later. This makes the
thread-local cache ineffective, as the cache does not store anything
beyond the lifetime of the thread.

Since `ActiveSupport::Cache::MemoryStore` is thread-safe, we should be
able to switch the L1 cache for feature flags to use this to reduce load
on Redis.

Since read and write access is synchronized, this does have the side
effect of adding contention when feature flags are accessed.

Discovered in
https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/9414

Move logs to core (frontend)

See merge request gitlab-org/gitlab!26383

backend side

Show cpu on clusters list

See merge request gitlab-org/gitlab!26783

Update dependency @gitlab/ui to ^9.23.1

See merge request gitlab-org/gitlab!26863

Package storage support should only happen with a EE instance

Update E2E test to add SSH key via the API

See merge request gitlab-org/gitlab!26852

Minor cleanup tests including removing
unused refs, returning promises instead
of using a done callback etc

Move toggle label ids function to utils

Address minor review comments

Indicate how many labels are selected

When the user selects more than 10 labels
we should display how many labels are currently
selected and what the maximum is

Cleaned up tests

Fix alignment of label checkmarks

Display selected number of labels at all times

Disable selection of new labels
after max labels selected

Ensure that the user can only select 15
labels at most. This is required to fix
https://gitlab.com/gitlab-org/gitlab/issues/38260

Fixed broken specs