Use path helpers consistently

lib/gollum/public/gollum/javascript/editor/gollum.editor.js.erb

@@ -151,7 +151,7 @@
           // get form fields
           var oldAction = $('#gollum-editor form').attr('action');
           var $form = $($('#gollum-editor form').get(0));
-          $form.attr('action', this.href || '/preview');
+          $form.attr('action', this.href || '<%= preview_path >');
           $form.attr('target', '_blank');
           var paths = window.location.pathname.split('/');
           $form.attr('page', paths[ paths.length - 1 ] || '')
@@ -429,7 +429,7 @@
       }
 
       // attempt to load the definition for this language
-      var script_uri = baseUrl + '/assets/editor/langs/' + markup_name + '.js';
+      var script_uri = '<%= assets_path %>/editor/langs/' + markup_name + '.js';
       $.ajax({
                 url: script_uri,
                 dataType: 'script',

lib/gollum/public/gollum/javascript/gollum.dialog.js.erb

@@ -101,7 +101,7 @@
 
       var id = fieldAttributes.id || 'upload';
       var name = fieldAttributes.name || 'file';
-      var action = fieldAttributes.action || '/upload_file';
+      var action = fieldAttributes.action || '<%= upload_file_path %>';
 
       html += '<form method=post enctype="multipart/form-data" ' +
         'action="' + action + '" ' + 'id="' + id + '">';

lib/gollum/views/helpers.rb

@@ -4,6 +4,7 @@ module Precious
   module Views
     module RouteHelpers
       ROUTES = {
+        assets: 'assets',
         'gollum' => {
           last_commit_info: 'last_commit_info',
           latest_changes: 'latest_changes',