Content about Repository was edited to comply with
docs standards. This is part of a SSOT epic.

- Added standard elements to each file.
- Moved content on Branches, and Compare, to the
  Branches file.
- Added a brief introduction piece to the GPG
  content.
- Lightly edited all content to improve clarity.

Merge branch '63547-add-system-notes-for-when-a-zoom-call-was-added-removed-from-an-issue' into 'master'

Resolve "Add system notes for when a zoom call was added/removed from an issue"

Closes #63547

See merge request gitlab-org/gitlab-ce!30857

Reorganize metrics dashboard

See merge request gitlab-org/gitlab-ce!31006

In preparation for embedding specific metrics in issues
https://gitlab.com/gitlab-org/gitlab-ce/issues/62971,
this commit moves the BaseService for metrics dashboards
to a new services subdirectory. This is purely for the sake
of organization and maintainability.

Resolve "Make quick action "commands applied" banner more useful"

Closes #56100

See merge request gitlab-org/gitlab-ce!26672

Extends the quick actions "commands applied" banner to show
the quick action preview text, but with everything in past tense.

Resolve "MembersFinder contains slow database query with OR conditions"

Closes #64180

See merge request gitlab-org/gitlab-ce!30451

Alerts dropdown to modal - CE1

See merge request gitlab-org/gitlab-ce!31036

Fix broken master because of security merge

Closes #65294

See merge request gitlab-org/gitlab-ce!31252

Update Rugged to 0.28.2

See merge request gitlab-org/gitlab-ce!31218

Add a zoom link added / removed system note when a zoom link is being
added / removed to the issue description.

Change qa-merge-request-settings to rspec-merge-request-settings

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31207

Change qa-* class references to js-* for suggestions

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31213

Change qa-* class references to js-* for squash-checkbox

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31214

Change qa-reverse-sort class references to rspec-reverse-sort

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31202

Change qa-* class references to rspec-* in spec/features/contextual_sidebar_spec.rb

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31211

Change qa-issuable-form-description to rspec-issuable-form-description

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31209

Change qa-full-name to rspec-full-name

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31206

Change qa-* class references to rspec-* for repository settings

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31210

Change qa-create-page-button to rspec-create-page-button

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31204

Change qa-* to rspec-* for save-merge-request-changes

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31205

Change qa-* class references to rspec-* for `allowed-to-{push|merge}-dropdown`

Closes gitlab-org/quality/team-tasks#182

See merge request gitlab-org/gitlab-ce!31203

Create index on environments by state

See merge request gitlab-org/gitlab-ce!31231

Make pdf.js render CJK characters

Closes #62152

See merge request gitlab-org/gitlab-ce!31220

Migrations for adding issue_id to versions table (CE)

See merge request gitlab-org/gitlab-ce!30765

These migrations do the following:

- Adds a new `issue_id` column to `versions`. This fixes an n+1 problem
  when loading versions for an issue in GraphQL as AR can now load from
  cache
- Change the unique restraint on versions.sha to be scoped to `issue_id`
  as in order to import version data, we need to allow duplicate `sha`
  values for versions
- Update all versions with an `issue_id`

https://gitlab.com/gitlab-org/gitlab-ee/issues/11090

Fix pdf.js rendering pages in the wrong order

Closes #64467

See merge request gitlab-org/gitlab-ce!31222

Resolve EE specific differences in the spec/ directory

See merge request gitlab-org/gitlab-ce!31109

Replace peek-pg with our own implementation

Closes #44441

See merge request gitlab-org/gitlab-ce!31187