Port of experimental-breadcrumbs to EE

See merge request !2314

Speed up issue counting for a project

See merge request !2310

Fix approvals request throwing 400 in IE 11

Closes #1874

See merge request !2306

[ci skip]

CE upstream - Wednesday

See merge request !2293

[ci skip]

[ci skip]

This runs a slightly slower query to get the issue and MR counts in the
navigation, but caches by user type (can see all / none confidential issues) for
two minutes.

When we are filtering by a single project, and the current user has access to
see confidential issues on that project, we don't need to filter by
confidentiality at all - just as if the user were an admin.

The filter by confidentiality often picks a non-optimal query plan: for
instance, AND-ing the results of all issues in the project (a relatively small
set), and all issues in the states requested (a huge set), rather than just
starting small and winnowing further.

[ci skip]

[ci skip]

Introduce namespace licensing for issue weights (EES)

Closes #2575

See merge request !2291

Make mirror specific admin application settings exclusive to Gitlab.com

See merge request !2307

Improve Namespace feature check

Closes #2761

See merge request !2279

See https://gitlab.com/gitlab-org/gitlab-ee/issues/1874
See https://gitlab.com/gitlab-org/gitlab-ce/issues/34534

Fix shared runners minutes

Closes gitlab-ce#33213

See merge request !2275

Set the default value for geo_secondary_role flag to false for test environment

Closes #2760

See merge request !2304

Backports CE "Add group members counting related data on namespaces API"

See merge request !2284

Disable all unnecessary Sidekiq-cron workers when node is a Geo secondary

See merge request !2261

Port of issueable-list-cleanup to EE

See merge request !2262

[EE] Allow the feature flags to be enabled/disabled with more granularity

See merge request !2290

[EE] Split up MergeRequestsController

See merge request !2295