Adds an index on users.type for faster retrieval of groups.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@5288 e93f8b46-1217-0410-a6f0-8f06a7374b81

db/migrate/20110401192910_add_index_to_users_type.rb

@@ -0,0 +1,9 @@
+class AddIndexToUsersType < ActiveRecord::Migration
+  def self.up
+    add_index :users, :type
+  end
+
+  def self.down
+    remove_index :users, :type
+  end
+end