partial fix for #1263 (posts)

app/views/posts/unvote.js.erb

@@ -0,0 +1,8 @@
+<% if @error %>
+  Danbooru.notice("<%= j @error.to_s %>");
+<% else %>
+  Danbooru.notice("Unvoted successfully");
+  $("#score-for-post-<%= @post.id %>").html(<%= @post.score %>);
+<% end %>
+$("#vote-links-for-post-<%= @post.id %>").show();
+$("#unvote-link-for-post-<%= @post.id %>").hide();