Revert "Merge branch 'backport-fix-load-error' into 'master'"

See merge request !8678

This reverts merge request !8671

Don't define ApplicationSetting defaults in a constant

See merge request !8671

remove 2gb tag from ci

See merge request !8672

Keep mini graph down pipelines index

See merge request !8651

Responsive title in diffs inline, side by side, with and without sidebar

Closes #25709

See merge request !8475

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

Fix shared runners queue update

See merge request !8663

Fix participants margins to fit on one line

See merge request !8640

Fix import no longer mapping users as admin

Closes #25346

See merge request !8625

Don't persist application settings in test env

See merge request !8573

Record used SSH keys only once per day

Closes #26877

See merge request !8655

Use Workhorse v1.3.0

See merge request !8660

Add documentation around OAuth/Personal Access Token scopes.

Closes #25851

See merge request !8226

Use Gitlab::ExclusiveLease to make sure that we enqueue Sidekiq job
at most once per day for given key.

Use `:empty_project` in Project, User, MergeRequest, and MoveToProjectFinder specs

See merge request !8648

Moved the webhooks and services gear options to a single one called integrations

See merge request !8380

Reduce DB-load for build-queues by storing last_update in Redis

See merge request !8084

Also show spinner on every new request to let the user know that new data is inbound

Document GIT_SUBMODULE_STRATEGY

See merge request !8586

Rename duplicate migrations and skip them if table/columns are already present

Closes #26868

See merge request !8644