Move .pipeline-graph to pipelines/graph

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

@@ -24,7 +24,7 @@
           in
           = time_interval_in_words pipeline.duration
 
-  .row-content-block.build-content.middle-block.pipeline-graph.hidden
+  .row-content-block.build-content.middle-block.hidden
     = render "projects/pipelines/graph", subject: pipeline, as: :pipeline
 
 - if pipeline.yaml_errors.present?

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

 - pipeline = local_assigns.fetch(:pipeline)
-.pipeline-visualization
+.pipeline-visualization.pipeline-graph
   %ul.stage-column-list
     = render partial: "projects/stage/graph", collection: pipeline.stages, as: :stage

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

@@ -12,7 +12,7 @@
 
 .tab-content
   #js-tab-pipeline.tab-pane
-    .build-content.middle-block.pipeline-graph
+    .build-content.middle-block
       = render "projects/pipelines/graph", subject: pipeline, as: :pipeline
 
   #js-tab-builds.tab-pane