Use buttons to destroy drafts and questions

As mentioned in commits 5311daadf and bb958daf0, using links combined
with JavaScript to generate POST (or, in this case, DELETE) requests to
the server has a few issues.

config/initializers/routes_hierarchy.rb

@@ -24,9 +24,9 @@ module ActionDispatch::Routing::UrlFor
   end
 
   def namespaced_polymorphic_path(namespace, resource, options = {})
-    if %w[Budget::Group Budget::Heading Poll::Booth Poll::BoothAssignment Poll::Officer
-          Poll::Question Poll::Question::Answer Poll::Question::Answer::Video Poll::Shift
-          SDG::LocalTarget].include?(resource.class.name)
+    if %w[Budget::Group Budget::Heading Legislation::DraftVersion Legislation::Question
+          Poll::Booth Poll::BoothAssignment Poll::Officer Poll::Question Poll::Question::Answer
+          Poll::Question::Answer::Video Poll::Shift SDG::LocalTarget].include?(resource.class.name)
       resolve = resolve_for(resource)
       resolve_options = resolve.pop