move previewed/posted comment outside of <form>, fixes duplicate comm…

…ent problem

a comment would get posted and then displayed inside the original
<form>.  when that comment would get edited, its <form> would be
nested inside the original one, and on webkit browsers, submitting
the inside form would submit the outside one.

app/views/comments/_commentbox.html.erb

@@ -30,16 +30,15 @@
  </div>

  <p></p>

  <% if defined?(show_comment) %>
    <% if show_comment.valid? %>
      <ol class="comments comments1 preview">
        <%= render :partial => "comments/comment",
          :locals => { :comment => show_comment, :story => story } %>
      </ol>
    <% else %>
      <%= errors_for comment %>
    <% end %>
<% end %>
<% if defined?(show_comment) %>
  <% if show_comment.valid? %>
    <ol class="comments comments1 preview">
      <%= render :partial => "comments/comment",
        :locals => { :comment => show_comment, :story => story } %>
    </ol>
  <% else %>
    <%= errors_for comment %>
  <% end %>
<% end %>
</div>