This mainly adds a new test to the pagination shared examples that
verifies that we can paginate backwards as well as forwards.

It takes the opportunity to:

- update the queries use `nodes` rather than `edges.nodes`
- update some of the query generation to be simpler
- add some helper methods and bindings to DRY up this code

The pagination tests are updated to be clearer, and a missing pagination
test is added.

The sort_enum is fixed - previously the upper and lowercase forms were
not synonymous (one would have string values, and the other had symbol
values). Now both have symbol values, and a case where this caused a bug
(in the requirements_finder) was detected and fixed.

Since the pagination specs now expect actual values rather than strings
everywhere, a number of sort_param values have been updated to be
symbols, which map to graphql Enums.

Fix kwargs deprecation warnings in config entry specs

See merge request gitlab-org/gitlab!48889

Remove unneeded periods from GraphQL descriptions

See merge request gitlab-org/gitlab!48876

Improve output of vale substitution rule

See merge request gitlab-org/gitlab!48852

Update docs: Auto DevOps is not auto-enabled on GitLab.com

See merge request gitlab-org/gitlab!48160

Clear up that Auto DevOps is only auto-enabled on self-managed
instances.

Render pipelines without DOMContentLoaded

See merge request gitlab-org/gitlab!48696

Add example of publishing NPM packages using semantic-release

See merge request gitlab-org/gitlab!48701

Adds a guide that explains how to publish NPM packages to GitLab's NPM
Registry using semantic-release.

Add documentation page for group-level VSA

See merge request gitlab-org/gitlab!48178

Group-level Value Stream Analytics (VSA) was introduced years after
project-level VSA, with documentation that simply pointed to the
original project-level VSA documenation. However, the features have
diverged over time, so now group-level VSA is much more feature-rich.
It deserves its own documentation page now, so this creates it. This
also removes group-level documentation that had been added to the
project-level page.

- also id -> ID

Merge branch 'Replace-GlDeprecatedDropdown-with-GlDropdown-in-app/assets/javascripts/boards' into 'master'

GlDeprecatedDropdown to GlDropdown in app/assets/javascripts/boards

See merge request gitlab-org/gitlab!41410

Fix flex overflow bug

See merge request gitlab-org/gitlab!48931

Add missing parentheses in code example

See merge request gitlab-org/gitlab!48929

Merge branch '287785-adjust-docs-for-using-feature-flags-for-tracking-using-redis-hll' into 'master'

Adjust docs for using feature flags for tracking using Redis HLL

See merge request gitlab-org/gitlab!48457

  - Add feature flag default enabled to docs

Dequarantine E2E specs due to bug being closed

See merge request gitlab-org/gitlab!48812

Update Rack to 2.2.3 in qa Gemfiles

See merge request gitlab-org/gitlab!48630

Fix future tense issues

See merge request gitlab-org/gitlab!48871

Fix future tense issues

See merge request gitlab-org/gitlab!48870

Fix some future tense issues in Ecosystem documentation

See merge request gitlab-org/gitlab!48580

Give more details about ci.skip push option

See merge request gitlab-org/gitlab!48850

Move the init code to the relevant folder

See merge request gitlab-org/gitlab!48663

DevOps Adoption: Integrate table component

See merge request gitlab-org/gitlab!47164

Add a table to the devops adoption feature which
displays the data for user defined segments.

Add crosslink to MR pipeline docs

See merge request gitlab-org/gitlab!48739

Clarify crosslink to variable operators

See merge request gitlab-org/gitlab!48728

Add crosslink to runner details

See merge request gitlab-org/gitlab!48756

Clarify only branches with schedules

See merge request gitlab-org/gitlab!48735

Add development doc on CSV export types

See merge request gitlab-org/gitlab!48316

Co-authored-by: Aishwarya Subramanian <asubramanian@gitlab.com>