fixes on the fly category creation

app/controllers/issue_categories_controller.rb

@@ -33,10 +33,7 @@ class IssueCategoriesController < ApplicationController
           redirect_to :controller => '/projects', :action => 'settings', :tab => 'categories', :id => @project
         end
         format.js do
-          # IE doesn't support the replace_html rjs method for select box options
-          render(:update) {|page| page.replace "issue_category_id",
-            content_tag('select', '<option></option>' + options_from_collection_for_select(@project.issue_categories, 'id', 'name', @category.id), :id => 'issue_category_id', :name => 'issue[category_id]')
-          }
+          render :locals => { :project => @project, :category => @category }
         end
       end
     else

app/views/issue_categories/create.js.erb

@@ -0,0 +1,13 @@
+<%#-- copyright
+OpenProject is a project management system.
+
+Copyright (C) 2012-2013 the OpenProject Team
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License version 3.
+
+See doc/COPYRIGHT.rdoc for more details.
+
+++#%>
+
+jQuery('#work_package_category_id').empty().append("<%= escape_javascript(options_from_collection_for_select(project.issue_categories, 'id', 'name', category.id)) %>");