Search query is especially slow if a user searches a generic string
which matches many records, in such case search can take tens of
seconds or time out. To speed up the search query, we search only for
first 1000 records, if there is >1000 matching records we just display
"1000+" instead of precise total count supposing that with such amount
the exact count is not so important for the user.

Because for issues even limited search was not fast enough, 2-phase
approach is used for issues: first we use simpler/faster query to get
all public issues, if this exceeds the limit, we just return the limit.
If the amount of matching results is lower than limit, we re-run more
complex search query (which includes also confidential issues).
Re-running the complex query should be fast enough in such case because the
amount of matching issues is lower than limit.

Because exact total_count is now limited, this patch also switches to
to "prev/next" pagination.

Related #40540

Resolve "CI failing on MergeRequestDiff#commits_count="

Closes #42340

See merge request gitlab-org/gitlab-ce!16653

Fix docs for GIT_CHECKOUT Gitlab Runner configuration

Closes gitlab-runner#2652

See merge request gitlab-org/gitlab-ce!16522

Backport changes to Gitlab::Checks::ChangeAccess from EE

See merge request gitlab-org/gitlab-ce!16652

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

Refactor dispatcher milestones show path

See merge request gitlab-org/gitlab-ce!16633

remove webpack bundle tag for monitoring:environments:metrics

See merge request gitlab-org/gitlab-ce!16638

Clarify that a feature that isn't in review by the 1st or 3rd doesn't necessarily miss the freeze

See merge request gitlab-org/gitlab-ce!16650

Adjust layout width for fixed layout #41830

Closes #41830

See merge request gitlab-org/gitlab-ce!16337

consistent function exports for Labels edit/new pages

See merge request gitlab-org/gitlab-ce!16635

Upgrade jasmine + raven to newer versions

See merge request gitlab-org/gitlab-ce!16573

Vendor 10.4 Auto DevOps template

See merge request gitlab-org/gitlab-ce!16639

Prevent Unicorn crashing in development on macOS

See merge request gitlab-org/gitlab-ce!16649

Document how to configure Fog with Digital Ocean Spaces

Closes gitlab-ee#4419

See merge request gitlab-org/gitlab-ce!16597

Update rack attack docs

See merge request gitlab-org/gitlab-ce!16328

Merge branch '42022-allow-users-to-request-access-not-visible-when-project-visibility-is-public' into 'master'

Fix visibility of "Allow users to request access" option in public projects

Closes #42022

See merge request gitlab-org/gitlab-ce!16485

Document advantages of axios-mock-adapter

See merge request gitlab-org/gitlab-ce!16645

Add ability to drive the API in QA specs

See merge request gitlab-org/gitlab-ce!16265

Upgraded all vue libraries

See merge request gitlab-org/gitlab-ce!16413

Incorporate Gitaly's RemoteService.UpdateRemoteMirror RPC

Closes gitaly#936

See merge request gitlab-org/gitlab-ce!16536

Incorporate Gitaly's OperationService.UserCommitFiles RPC

Closes gitaly#890

See merge request gitlab-org/gitlab-ce!16307

Add note about live_debug only working on javascript enabled specs

See merge request gitlab-org/gitlab-ce!16625

Backport for Resolve "change status icon for reports when fails to be found or cannot load"

See merge request gitlab-org/gitlab-ce!16616

Archive changelogs for versions before 8.16

See merge request gitlab-org/gitlab-ce!16624

Resolve ""This job has not been triggered yet"  after hitting "Retry""

Closes #42119

See merge request gitlab-org/gitlab-ce!16583

Resolve "Cannot change project visibility from Private (even when owner)"

Closes #40612

See merge request gitlab-org/gitlab-ce!16595