Rename all ci_commit[s] in application code to pipeline[s]

app/controllers/projects/commit_controller.rb

app/controllers/projects/merge_requests_controller.rb

app/helpers/ci_status_helper.rb

app/services/ci/create_trigger_request_service.rb

app/services/ci/image_for_build_service.rb

app/services/create_commit_builds_service.rb

...vices/merge_requests/merge_when_build_succeeds_service.rb

app/views/projects/commit/_builds.html.haml

app/views/projects/commit/_pipeline.html.haml

app/views/projects/merge_requests/_new_submit.html.haml

app/views/projects/merge_requests/_show.html.haml

app/views/projects/merge_requests/show/_builds.html.haml

app/views/projects/merge_requests/widget/_heading.html.haml

...ews/projects/merge_requests/widget/open/_accept.html.haml

app/views/projects/pipelines/show.html.haml

lib/api/commit_statuses.rb