Fix user uploads file spec

app/assets/javascripts/vue_shared/components/markdown/toolbar.vue

@@ -59,7 +59,7 @@
       v-if="canAttachFile"
       class="uploading-container"
     >
-      <span class="uploading-progress-container d-none">
+      <span class="uploading-progress-container hide">
         <i
           class="fa fa-file-image-o toolbar-button-icon"
           aria-hidden="true"
@@ -75,7 +75,7 @@
           </i>
         </span>
       </span>
-      <span class="uploading-error-container d-none">
+      <span class="uploading-error-container hide">
         <span class="uploading-error-icon">
           <i
             class="fa fa-file-image-o toolbar-button-icon"
@@ -111,7 +111,7 @@
         Attach a file
       </button>
       <button
-        class="btn btn-secondary btn-sm d-none button-cancel-uploading-files"
+        class="btn btn-secondary btn-sm hide button-cancel-uploading-files"
         type="button"
       >
         Cancel

app/views/shared/notes/_hints.html.haml

@@ -11,7 +11,7 @@
     supported
 
   %span.uploading-container
-    %span.uploading-progress-container.d-none
+    %span.uploading-progress-container.hide
       = icon('file-image-o', class: 'toolbar-button-icon')
       %span.attaching-file-message
         -# Populated by app/assets/javascripts/dropzone_input.js
@@ -19,7 +19,7 @@
       %span.uploading-spinner
         = icon('spinner spin', class: 'toolbar-button-icon')
 
-    %span.uploading-error-container.d-none
+    %span.uploading-error-container.hide
       %span.uploading-error-icon
         = icon('file-image-o', class: 'toolbar-button-icon')
       %span.uploading-error-message
@@ -32,4 +32,4 @@
       = icon('file-image-o', class: 'toolbar-button-icon')
       Attach a file
 
-    %button.btn.btn-secondary.btn-sm.d-none.button-cancel-uploading-files{ type: 'button' } Cancel
+    %button.btn.btn-secondary.btn-sm.hide.button-cancel-uploading-files{ type: 'button' } Cancel