Re-annotate models

app/models/abuse_report.rb

app/models/issue.rb

app/models/merge_request.rb

app/models/note.rb

app/models/project_services/drone_ci_service.rb

app/models/sent_notification.rb

app/models/user.rb

spec/factories/abuse_reports.rb

spec/factories/merge_requests.rb

spec/factories/notes.rb

spec/models/abuse_report_spec.rb

spec/models/application_setting_spec.rb

spec/models/issue_spec.rb

spec/models/merge_request_spec.rb

spec/models/note_spec.rb

spec/models/user_spec.rb