Merge branch 'snippet-spam-fix' into 'master'

Don't render snippet actions for logged-out users

Closes #27708

See merge request !8995

app/views/projects/snippets/_actions.html.haml

+- return unless current_user
+
 .hidden-xs
   - if can?(current_user, :update_project_snippet, @snippet)
     = link_to edit_namespace_project_snippet_path(@project.namespace, @project, @snippet), class: "btn btn-grouped" do

app/views/snippets/_actions.html.haml

+- return unless current_user
+
 .hidden-xs
   - if can?(current_user, :update_personal_snippet, @snippet)
     = link_to edit_snippet_path(@snippet), class: "btn btn-grouped" do
@@ -5,13 +7,11 @@
   - if can?(current_user, :admin_personal_snippet, @snippet)
     = link_to snippet_path(@snippet), method: :delete, data: { confirm: "Are you sure?" }, class: "btn btn-grouped btn-inverted btn-remove", title: 'Delete Snippet' do
       Delete
-  - if current_user
   = link_to new_snippet_path, class: "btn btn-grouped btn-inverted btn-create", title: "New snippet" do
     New snippet
   - if @snippet.submittable_as_spam? && current_user.admin?
     = link_to 'Submit as spam', mark_as_spam_snippet_path(@snippet), method: :post, class: 'btn btn-grouped btn-spam', title: 'Submit as spam'
-- if current_user
-  .visible-xs-block.dropdown
+.visible-xs-block.dropdown
   %button.btn.btn-default.btn-block.append-bottom-0.prepend-top-5{ data: { toggle: "dropdown" } }
     Options
     = icon('caret-down')