Do not use progress bar when downloading build artifacts

Closes #12491

app/views/projects/artifacts/browse.html.haml

@@ -4,7 +4,7 @@
 .top-block.gray-content-block.clearfix
   .pull-right
     = link_to download_namespace_project_build_artifacts_path(@project.namespace, @project, @build),
-      class: 'btn btn-default' do
+      class: 'btn btn-default download' do
       = icon('download')
       Download artifacts archive
 
@@ -22,6 +22,10 @@
   .center Empty
 
 :javascript
+  $('.top-block').on('click', '.download', function(e) {
+    e.stopPropagation();
+  });
+
   $('.tree-holder').on('click', 'tr[data-link] a', function(e) {
     e.stopImmediatePropagation();
   });