Add rename button. Fix #444.

lib/gollum/frontend/public/gollum/javascript/gollum.js

@@ -113,6 +113,48 @@ $(document).ready(function() {
     }
   }
 
+  if ($('#minibutton-rename-page').length) {
+    $('#minibutton-rename-page').removeClass('jaws');
+    $('#minibutton-rename-page').click(function(e) {
+      e.preventDefault();
+
+      var path = $(this).data('path');
+      if (path) {
+        path = path + '/';
+      }
+
+      $.GollumDialog.init({
+        title: 'Rename Page',
+        fields: [
+          {
+            id:   'name',
+            name: 'Rename to',
+            type: 'text',
+            defaultValue: path || ''
+          }
+        ],
+        OK: function( res ) {
+          var name = 'Rename Page';
+          if ( res['name'] ) {
+            name = res['name'];
+          }
+          var path = window.location.pathname;
+          var oldName = path.substring(path.lastIndexOf('/')+1);
+          var msg = 'Renamed ' + oldName + ' to ' + name;
+          jQuery.ajax( {
+            type: 'POST',
+            url: '/edit/' + oldName,
+            // omit path: pathName until https://github.com/github/gollum/issues/446 is fixed.
+            data:  { rename: name, page: oldName, message: msg },
+            success: function() {
+                window.location = '/' + encodeURIComponent(name);
+            }
+          });
+        }
+      });
+    });
+  }
+
   if ($('#minibutton-new-page').length) {
     $('#minibutton-new-page').removeClass('jaws');
     $('#minibutton-new-page').click(function(e) {

lib/gollum/frontend/templates/page.mustache

@@ -11,6 +11,8 @@
     class="action-all-pages">File View</a></li>
     <li class="minibutton" class="jaws">
       <a href="#" id="minibutton-new-page">New Page</a></li>
+    <li class="minibutton" class="jaws">
+      <a href="#" id="minibutton-rename-page">Rename Page</a></li>
     {{#editable}}
     <li class="minibutton"><a href="/edit/{{escaped_url_path}}"
        class="action-edit-page">Edit Page</a></li>