Start versioning cached markdown fields

Closes #30672

See merge request !10597

Refactor add_users method for project and group

See merge request !10850

discussions docs

See merge request !10390

- Move to dicsussions/index.md
- Bring back previous path with a link to new location
- Reorder sections

Fixed the preview keyboard shortcut focusing wrong tab

Closes #31101

See merge request !10849

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Now correctly tests against different forms

Based on !10841 Fix Error 500 when referencing issue with project in pending delete

Closes #31215

See merge request !10843

Refactor environments components into vue files - part 3

See merge request !10833

Fix user profile tabs showing raw json when navigating back and forward

See merge request !10352

Adding animation for all dropdown

Closes #26208

See merge request !8419

Add help regarding vue resource and where to include it

See merge request !10819

fix inline diff copying in firefox

Closes #31193

See merge request !10838

Refactor Admin::GroupsController#members_update method and add some specs

See merge request !10828

Add CHANGELOG entry

Closes #31101

Mention Microsoft teams service in project services doc

See merge request !10815

Add doc for scheduled trigger

Closes #30440

See merge request !10591

On initial startup with no rows in the application_settings table, the
metaprogramming call to `if enabled?` attempts to create a row. This triggers
the HTML caching path, which attempts to store metrics.

At this point, not all the methods in `Gitlab::Metrics` have been defined! Move
`current_transaction` to be defined before running the metaprogramming, to
avoid a confusing NoMethodError

Fix user activities API version in docs

[ci skip]

See merge request !10822

Fix encoding issue exporting a project

Closes #31186

See merge request !10824

Guarantee only one state is shown at a time

Closes #31189

See merge request !10835

Replace builds_enabled with jobs_enabled in projects API v4

Closes #31012

See merge request !10786

[ci skip]

Add Fork/Cancel confirmation to "Replace"/"Delete" buttons

Closes #30637

See merge request !10602

This is based on:

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10841