add rename support to the frontend

lib/gollum/frontend/app.rb

@@ -55,10 +55,11 @@ module Precious
       wiki   = Gollum::Wiki.new($path)
       page   = wiki.page(name)
       format = params[:format].intern
+      name   = params[:rename] if params[:rename]
 
-      wiki.update_page(page, page.name, format, params[:content], commit_message)
+      wiki.update_page(page, name, format, params[:content], commit_message)
 
-      redirect "/#{name}"
+      redirect "/#{Gollum::Page.cname name}"
     end
 
     post '/create/:name' do

lib/gollum/frontend/templates/edit.mustache

@@ -2,13 +2,21 @@
   <a href="/{{name}}">&laquo; Back</a>
   <h1>Editing &ldquo;{{name}}&rdquo;</h1>
 
-  <form iclass="edit_wiki" method="post" action="/edit/{{name}}">
+  <form class="edit_wiki" method="post" action="/edit/{{name}}">
+    <div>
+      <label>
+        Title<br />
+        <input class="text" type="text" name="rename" value="{{name}}" />
+      </label>
+      <br />
+
       <div id="wiki-form" class="comment-form wiki-form">
         <ul class="tabs inline-tabs">
           <li><a href="#write_bucket" action="write">Write</a></li>
           <li><a href="#preview_bucket" action="preview">Preview</a></li>
         </ul>
         <div id="write_bucket" class="tab-content">
+
           {{>editbar}}
           <div class="inner">
             <textarea name="content">{{content}}</textarea>
@@ -25,5 +33,6 @@
       <div class="actions">
         <input type="submit" value="Save page" />
       </div>
+    </div>
   </form>
 </div>