Restore path support to livepreview.js.

lib/gollum/frontend/public/gollum/livepreview/js/livepreview/livepreview.js

@@ -74,8 +74,13 @@ $.key = function( key ) {
 
 // True if &create=true
 var create = $.key( 'create' );
-// The name of the page being edited.
+// The path and name of the page being edited.
 var pageName = $.key( 'page' );
+var pathName = $.key( 'path' );
+
+if ( pathName === 0 ) {
+  pathName = undefined;
+}
 
 defaultCommitMessage = function() {
   var msg = pageName + ' (markdown)';
@@ -97,14 +102,20 @@ $.save = function( commitMessage ) {
   var markdown = 'markdown';
   var txt = editorSession.getValue();
   var msg = defaultCommitMessage();
-  var newLocation = location.protocol + '//' + location.host + '/' + pageName;
+  var newLocation = location.protocol + '//' + location.host;
+
+  if (pathName) {
+    newLocation += '/' + pathName;
+  }
+  
+  newLocation += '/' + pageName;
 
   // if &create=true then handle create instead of edit.
   if ( create ) {
     jQuery.ajax( {
       type: POST,
       url: '/create',
-      data:  { page: pageName, format: markdown, content: txt, message: commitMessage || msg },
+      data:  { path: pathName, page: pageName, format: markdown, content: txt, message: commitMessage || msg },
       success: function() {
         win.location = newLocation;
       }
@@ -113,7 +124,7 @@ $.save = function( commitMessage ) {
     jQuery.ajax( {
       type: POST,
       url: '/edit/' + pageName,
-      data:  { format: markdown, content: txt, message:  commitMessage || msg },
+      data:  { path: pathName, page: pageName, format: markdown, content: txt, message:  commitMessage || msg },
       success: function() {
           win.location = newLocation;
       }