Merge branch 'revert-a0d5bb0b' into 'master'

app/models/project_services/jira_service.rb

doc/integration/README.md

doc/integration/img/jira_add_user_to_group.png

doc/integration/img/jira_create_new_group.png

doc/integration/img/jira_create_new_group_name.png

doc/integration/img/jira_create_new_user.png

doc/integration/img/jira_group_access.png

doc/integration/img/jira_issue_reference.png

doc/integration/img/jira_merge_request_close.png

doc/integration/img/jira_project_name.png

doc/integration/img/jira_service.png

doc/integration/img/jira_service_close_issue.png

doc/integration/img/jira_service_page.png

doc/integration/img/jira_user_management_link.png

doc/integration/img/jira_workflow_screenshot.png

doc/integration/jira.md

doc/project_services/img/builds_emails_service.png

doc/project_services/img/jira_add_gitlab_commit_message.png

doc/project_services/img/jira_issue_closed.png

doc/project_services/img/jira_issue_reference.png