Better titles and some grammar updates

Removes outdated sections and improves others to be clearer.
Also updates other page links and moves other sections
to their own pages as appropriate.

Merge branch '29789-merge-request-approvers-in-list-sometimes-doesnt-show-correct-number' into 'master'

Resolve "Merge request approvers in list sometimes doesnt show correct number"

Closes #29789

See merge request gitlab-org/gitlab!23827

Initial exploration of this problem. I would think if an MR needs "X"
approvals, that would supersede the project's rule of "Y" approvals.

We'll see what the pipeline says!

Resolve "Embed: Add link to embedded panels to go to logs page"

Closes #201846

See merge request gitlab-org/gitlab!25111

Added documentation for Enable Review Apps

See merge request gitlab-org/gitlab!24988

Step 2 - Fix Web IDE on projects without merge requests

See merge request gitlab-org/gitlab!24508

Fix for "Refactor merge requests/issues API specs"

See merge request gitlab-org/gitlab!25243

Use closest allowed visibility level for groups creation on Group Import

See merge request gitlab-org/gitlab!25026

Separate user agent, custom attribute and page domain cert into own entities file

See merge request gitlab-org/gitlab!24985

Remove self monitoring feature flag

See merge request gitlab-org/gitlab!23631

When a namespace GitLab Subscription expires, disable SSO enforcement

Closes #34287

See merge request gitlab-org/gitlab!21135

Add a Go code format guideline

See merge request gitlab-org/gitlab!25179

- When importing groups that had subgroups using
  Group Import/Export functionality,
  visibility levels were not considered.
- Which led to import failures due to validation errors,
  when a group that had internal visibility level is being
  imported into a private one.
- This MR changes visibility levels to, either use parent
  group's closest visibility level, or private.

Use method expect_response_contain_exactly instead
of expect_paginated_array_response in specs
where the result is not expected to be ordered

Add E2E test of fork creation after storage change

See merge request gitlab-org/gitlab!21383

Tests that if a fork is created and then the parent project is moved
to a new gitaly storage/shard, another fork can be created after the
move.

See https://gitlab.com/gitlab-org/gitlab/issues/38264

Add the ability to create a fork via the API, check import status (to
confirm when the fork is complete), and change repository storage.

Resource::Fork needed to be updated, which also required updating
Resource::MergeRequestFromFork and the test that uses it so that that
test can still fabricate a fork via the UI.

Separate application and blob entities into own class files

See merge request gitlab-org/gitlab!24997

Code Nav Poc: Extend LSIF info with hover data

See merge request gitlab-org/gitlab!23682

Add more group attrs to list of excluded attributes for Group Import

See merge request gitlab-org/gitlab!25031

Swap AlertsController#metrics_dashboard to use metric_id and env_id

See merge request gitlab-org/gitlab!24888

Resolve "Disable self-approval at the Instance level"

Closes #39060

See merge request gitlab-org/gitlab!23731

Danger: Remove single code base analysis

See merge request gitlab-org/gitlab!25228

Add package dependencies cleanup migration

See merge request gitlab-org/gitlab!24868

Set default true for the nuget_package_registry feature flag

See merge request gitlab-org/gitlab!25157

Avoid autolinking YouTrack issue numbers followed by letters

See merge request gitlab-org/gitlab!24770

- Exclude certain attributes from Group Import/Export of
  Group Model to disallow an ability to overwrite them

Bump graphql to 1.9.12

See merge request gitlab-org/gitlab!25181

Implement allowing empty needs for jobs in DAG pipelines

See merge request gitlab-org/gitlab!22246

Increase pipeline email notification from 10 to 30 lines

See merge request gitlab-org/gitlab!21728

Those with dependency_type 5 should be removed

Add subepics feature to license and services

See merge request gitlab-org/gitlab!24170