Rename MWBS to MWPS (EE port)

See merge request !1332

Remove the newrelic gem

See merge request !1335

The frontend should use the v3 API for now

Closes gitlab-ce#28863

See merge request !1331

Deploy boards backend

Closes #1589

See merge request !1278

Custom empty exception class cop

See merge request !1328

 Rename column in the database
 Rename fields related to import/export feature
 Rename API endpoints
 Rename documentation links
 Rename the rest of occurrences in the code
 Replace the images that contain the words "build succeeds" and docs referencing to them
 Make sure pipeline is green and nothing is missing.

# Conflicts:
#	app/controllers/projects/merge_requests_controller.rb
#	app/serializers/merge_request_entity.rb
#	app/services/merge_requests/merge_when_pipeline_succeeds_service.rb
#	app/services/merge_requests/refresh_service.rb
#	app/views/projects/merge_requests/merge.js.haml
#	app/views/projects/merge_requests/widget/open/_accept.html.haml
#	doc/api/merge_requests.md
#	doc/api/projects.md
#	lib/api/entities.rb
#	lib/api/v3/entities.rb
#	lib/api/v3/merge_requests.rb
#	spec/services/merge_requests/merge_when_pipeline_succeeds_service_spec.rb
#	spec/services/merge_requests/refresh_service_spec.rb

Add note about how to use or escape variables inside other variables

See merge request !1324

[ci skip]

[ci skip]

Restructure Pages docs index and getting started guides

See merge request !1329

Use rollout_status_path provided in environment to fetch the data instead of hardcoded endpoint

See merge request !1323

[ci skip]

From the Ruby style guide:

    # bad
    class FooError < StandardError
    end

    # okish
    class FooError < StandardError; end

    # good
    FooError = Class.new(StandardError)

This cop does that, but only for error classes (classes where the
superclass ends in 'Error'). We have empty controllers and models, which
are perfectly valid empty classes.

Add internal endpoint to notify post-receive to Gitaly

See merge request !1254

Move all Pages related content to a single location

See merge request !1321

Port of 27354-navigation-new-button to EE

See merge request !1287

[ci skip]

[ci skip]

# Conflicts:
#	CHANGELOG.md

Merge branch '28769-raise-custom-exception-in-all-methods-of-mergeservice-that-want-to-inform-the-user-ee' into 'master'

Use exceptions for MergeService error handling

See merge request !1320

If any method called by `MergeService#execute` raises a `MergeError`,
that error's message will be logged, the model will be updated, and the
merge will fail.

CE upstream

Closes omnibus-gitlab#1361

See merge request !1319

Fix migration without DOWNTIME clause specified

See merge request !9571

Make RuboCop happy

See merge request !9554

Add button to create issue for failing build

Closes #25920

See merge request !9391