apply diff patch file

app/views/projects/blob/viewers/_gitlab_ci_yml_loading.html.haml

-.spinner.align-text-bottom.mr-1
+= loading_icon(css_class: "gl-vertical-align-text-bottom mr-1")
 Validating GitLab CI configuration…
 
 = link_to 'Learn more', help_page_path('ci/yaml/README')

app/views/projects/blob/viewers/_loading.html.haml

-.text-center.gl-mt-3.gl-mb-3.
-  .spinner.spinner-md.qa-spinner.mt-1
+.text-center.gl-mt-4.gl-mb-3
+  = loading_icon(size: "md", css_class: "qa-spinner")

app/views/projects/blob/viewers/_loading_auxiliary.html.haml

-.spinner.align-text-bottom
+= loading_icon(css_class: "gl-vertical-align-text-bottom")
 Analyzing file…

app/views/projects/blob/viewers/_route_map_loading.html.haml

-.spinner.align-text-bottom.mr-1
+= loading_icon(css_class: "gl-vertical-align-text-bottom gl-mr-1")
 Validating Route Map…
 
 = link_to 'Learn more', help_page_path('ci/environments/index.md', anchor: 'going-from-source-files-to-public-pages')

app/views/projects/blob/viewers/_sketch.html.haml

 .file-content#js-sketch-viewer{ data: { endpoint: blob_raw_path } }
-  .text-center.gl-mt-3.gl-mb-3.js-loading-icon
-    .spinner.spinner-md.mt-1
+  .text-center.gl-mt-4.gl-mb-3.js-loading-icon
+    = loading_icon(size: "md")

app/views/projects/blob/viewers/_stl.html.haml

 .file-content.is-stl-loading
-  .text-center.gl-mt-3.gl-mb-3.#js-stl-viewer{ data: { endpoint: blob_raw_path } }
-    .spinner.spinner-md.mt-1
+  .text-center#js-stl-viewer{ data: { endpoint: blob_raw_path } }
+    = loading_icon(size: "md", css_class: "gl-mt-4 gl-mb-3")
   .text-center.gl-mt-3.gl-mb-3.stl-controls
     .btn-group
       %button.btn.btn-default.btn-sm.js-material-changer{ data: { type: 'wireframe' } }