rails 3.1 and designs (with bug)

Gemfile

@@ -1,6 +1,6 @@
 source 'http://rubygems.org'
 
-gem 'rails', '3.0.6'
+gem 'rails', '>=3.1.0.rc4' 
 gem 'yajl-ruby', :require => 'yajl'
 
 gem 'bson_ext'
@@ -9,13 +9,14 @@ gem 'ckeditor'
 gem 'devise'
 gem 'mini_magick'
 
-gem 'mongoid', '2.0.0'
+gem 'mongoid'
 
-gem 'rake', '0.8.7'
+gem 'rake', '>=0.9.2'
+gem 'jquery-rails', '>= 1.0.3'
 
 # To use debugger (ruby-debug for Ruby 1.8.7+, ruby-debug19 for Ruby 1.9.2+)
 # gem 'ruby-debug'
-# gem 'ruby-debug19'
+ gem 'ruby-debug19'
 
 group :test, :development do
   gem "rspec", "~> 2.0"
@@ -28,4 +29,4 @@ group :test, :development do
   # gem "capybara"
   # gem 'yard'
   # gem "bluecloth"
-end
+end