Improve performance of the global search for issuables

Closes #59522

See merge request gitlab-org/gitlab-ce!27817

Removed the conditions added to
Project.with_feature_available_for_user, and moved to the
IssuableFinder. Now, we ensure that, in the projects retrieved
in the Finder, the user has enough access for the feature.

doc/ci: include local: remove superfluous ":"

See merge request gitlab-org/gitlab-ce!28112

Set created_at and updated_at for sorting specs

Closes #61541

See merge request gitlab-org/gitlab-ce!28173

Fix installation from source

See merge request gitlab-org/gitlab-ce!28170

Upgrade Gitaly to v1.42.0

See merge request gitlab-org/gitlab-ce!28135

CE Backport for Dependency Proxy UI

See merge request gitlab-org/gitlab-ce!27965

Clean up CarrierWave's import/export files

Closes #60656

See merge request gitlab-org/gitlab-ce!27487

Add wbr style for IE11 compatibility

See merge request gitlab-org/gitlab-ce!27846

Unlike uploads that have been uploaded with Tempfile, the project
import/export archives are stored in a temporary cache directory and
remain there if:

1. Object storage is enabled
2. `move_to_store` is set to `true`.

CarrierWave will leave these files there until disk space runs out or a
clean step is run manually.

If `move_to_store` is set to `false`, CarrierWave will remove the files
after storing them. However, unlike a local file, with object storage,
the file is still copied, so setting `move_to_store` to `true`
doesn't buy us anything.

To ensure files are cleaned up, we can just inherit from the
GitlabUploader implementation of `move_to_store`, which returns `true`
if it's a local file, `false` otherwise.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/60656

This makes sure that the results are predictable and the same on both
Postgres and MySQL

Cleans up todos.scss style-lint warnings

Closes #59930

See merge request gitlab-org/gitlab-ce!28076

Generate EE-specific JavaScript fixtures into ee/ directory  (CE-backport)

See merge request gitlab-org/gitlab-ce!28032

Only renders Next badge for gitlab.com

Closes #61278

See merge request gitlab-org/gitlab-ce!28056

Compiling git has a wrong symbol that leads into invalid command

Allow replying to an individual note in the API

Closes #61392

See merge request gitlab-org/gitlab-ce!28120

Strip whitespace for PipelineSchedule#cron

See merge request gitlab-org/gitlab-ce!27990

Instance level k8s clusters

See merge request gitlab-org/gitlab-ce!27196

Additional fix to handle NULL lock_version

See merge request gitlab-org/gitlab-ce!28153

Backport members SCSS changes

See merge request gitlab-org/gitlab-ce!28115

Resolve "Add filtering to project dashboard [FE]"

Closes #56992

See merge request gitlab-org/gitlab-ce!25231

Fix update head pipeline process of Pipelines for merge requests

See merge request gitlab-org/gitlab-ce!28057

If the UI sends a string value for lock_version (e.g. "0"), then the
previous monkey patch did not properly handle that properly. This
commit casts the value to an integer to determine whether to look for
NULL lock_versions.

For merge requests, GitLab sends a POST request to
`namespace/project/merge_requests/:iid` with the
`merge_request[lock_version]` parameter with a string `0`. The string
value comes from the form field, which explains why
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/28145 wasn't
sufficient.

Correct repo mirror SSH key generation docs

See merge request gitlab-org/gitlab-ce!27998

Add issue template for refactorings

See merge request gitlab-org/gitlab-ce!27889

CE Add leave link to access_granted email

See merge request gitlab-org/gitlab-ce!27892

(CE Port) New user onboarding (Welcome screen)

See merge request gitlab-org/gitlab-ce!28062

- Add styles for blue popovers
- Add render_if_exists to help menu for "Learn GitLab" menu item

Resolve "Support Prometheus for group-level clusters"

Closes #51963

See merge request gitlab-org/gitlab-ce!27280

[CE] Compute resolver complexity based on items

See merge request gitlab-org/gitlab-ce!28017

If a field is a resolver, its complexity is automatically
increased. By default we add extra points for sort and search
arguments (which will be common for various resolvers).

For specific resolvers we add field-specific complexity, e.g.
for Issues complexity is increased if we filter issues by `labelName`
(because then SQL query is more complex). We may want to tune these
values in future depending on real-life results.

Complexity is also dependent on the number of loaded nodes, but only
if we don't search by specific ID(s). Also added complexity is limited
(by default only twice more than child complexity) - the reason is
that although it's more complex to process more items, the complexity
increase is not linear (there is not so much difference between loading
10, 20 or 100 records from DB).

Try to simplify feature flag checks by using policies

There are two cluster hierarchies one for the deployment platform and
one for controllers. The main difference is that deployment platforms do
not check user permissions and only return the first match.