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