Require i18n version 0.4.1 and fix monkey patch to work with it

Rails 3 pulls in i18n version 0.4.1 as a separate gem which then
breaks our code if it is running on a machine with rails 3 installed
as it tries to monkey patch i18n and fails, so this fix allows us
to run on a machine with rails 3 installed.

config/environment.rb

@@ -24,6 +24,7 @@ Rails::Initializer.run do |config|
   config.gem 'httpclient'
   config.gem 'SystemTimer', :version => '>= 1.1.3', :lib => 'system_timer'
   config.gem 'sanitize'
+  config.gem 'i18n', :version => '>= 0.4.1'
 
   # Only load the plugins named here, in the order given (default is alphabetical).
   # :all can be used as a placeholder for all plugins not explicitly named

config/initializers/i18n.rb

@@ -1,20 +1,22 @@
 module I18n
   module Backend
-    module Base
-      protected
-      alias_method :old_init_translations, :init_translations
+    class Simple
+      module Implementation
+        protected
+        alias_method :old_init_translations, :init_translations
       
-      def init_translations
-        old_init_translations
+        def init_translations
+          old_init_translations
 
-        merge_translations(:nb, translations[:no])
-        translations[:no] = translations[:nb]
+          store_translations(:nb, translations[:no])
+          translations[:no] = translations[:nb]
 
-        friendly = translate('en', 'time.formats.friendly')
+          friendly = translate('en', 'time.formats.friendly')
 
-        available_locales.each do |locale|
-          unless lookup(locale, 'time.formats.friendly')
-            store_translations(locale, :time => { :formats => { :friendly => friendly } })
+          available_locales.each do |locale|
+            unless lookup(locale, 'time.formats.friendly')
+              store_translations(locale, :time => { :formats => { :friendly => friendly } })
+            end
           end
         end
       end