fix blobs edit spec

app/assets/stylesheets/framework/dropdowns.scss

@@ -24,7 +24,7 @@
   display: none;
 }
-.show {
+.show.dropdown {
   .dropdown-menu,
   .dropdown-menu-nav {
     @include set-visible;

app/views/projects/blob/_editor.html.haml

@@ -30,7 +30,7 @@
   .file-editor.code
     %pre.js-edit-mode-pane#editor= params[:content] || local_assigns[:blob_data]
     - if local_assigns[:path]
-      .js-edit-mode-pane#preview.d-none
+      .js-edit-mode-pane#preview.hide
         .center
           %h2
             %i.icon-spinner.icon-spin

app/views/projects/diffs/_stats.html.haml

@@ -2,7 +2,7 @@
 - sum_removed_lines = diff_files.sum(&:removed_lines)
 .commit-stat-summary.dropdown
   Showing
-  %button.diff-stats-summary-toggler.js-diff-stats-dropdown{ type: "button", data: { toggle: "dropdown" } }<
+  %button.diff-stats-summary-toggler.js-diff-stats-dropdown{ type: "button", data: { toggle: "dropdown", display: "static" } }<
     = pluralize(diff_files.size, "changed file")
     = icon("caret-down", class: "prepend-left-5")
   %span.diff-stats-additions-deletions-expanded#diff-stats