First stage of i18n. Some migrations and extra plugins.

db/migrate/033_change_diary_entries_language.rb

@@ -0,0 +1,9 @@
+class ChangeDiaryEntriesLanguage < ActiveRecord::Migration
+  def self.up
+    change_column "diary_entries", "language", :string, :default => "en", :null => false
+  end
+
+  def self.down
+    change_column "diary_entries", "language", :string, :limit => 3, :default => nil, :null => true
+  end
+end