Merge branch 'rails5-fix-48140' into 'master'

Rails 5 fix Capybara::ElementNotFound: Unable to find visible css #modal-revert-commit

Closes #48140 et #48139

See merge request gitlab-org/gitlab-ce!20044

changelogs/unreleased/rails5-fix-48140.yml

+---
+title: 'Rails 5 fix Capybara::ElementNotFound: Unable to find visible css #modal-revert-commit
+  and expected: "/bar" got: "/foo"'
+merge_request: 20044
+author: Jasper Maes
+type: fixed

spec/features/profiles/account_spec.rb

@@ -67,4 +67,6 @@ def update_username(new_username)
   page.within('.modal') do
     find('.js-modal-primary-action').click
   end
+
+  wait_for_requests
 end

spec/features/projects/merge_requests/user_reverts_merge_request_spec.rb

@@ -13,6 +13,8 @@ describe 'User reverts a merge request', :js do
 
     click_button('Merge')
 
+    wait_for_requests
+
     visit(merge_request_path(merge_request))
   end