Fix relations error in tags

app/views/admin/tags/_form.html.erb

@@ -1,4 +1,4 @@
-<%= form_for tag, :url => admin_tag_path(tag), :remote => true do |f| %>
+<%= form_for :tag, :url => admin_tag_path(tag), :method => :put, :remote => true do |f| %>
 	<% @site_valid_locales.each do |locale| %>
 	  <%= I18nVariable.from_locale(locale) %>:<%= f.text_field locale %>
 	<% end %>