Merge branch '322755-add-bulk-edit-to-issues-list-page-refactor' into 'master'

app/assets/javascripts/issuable_bulk_update_actions.js

app/assets/javascripts/issuable_bulk_update_sidebar.js

app/assets/javascripts/issuable_index.js

...ts/javascripts/issuable_list/components/issuable_item.vue

...vascripts/issuable_list/components/issuable_list_root.vue

...ts/javascripts/issues_list/components/issues_list_app.vue

app/assets/javascripts/labels_select.js

app/assets/javascripts/pages/projects/issues/index/index.js

app/controllers/projects/issues_controller.rb

app/views/projects/issues/index.html.haml

...ntend/issuable_list/components/issuable_list_root_spec.js

spec/frontend/issues_list/components/issues_list_app_spec.js