Keep track of issue description changes (#746).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4954 e93f8b46-1217-0410-a6f0-8f06a7374b81

db/migrate/20110227125750_change_journal_details_values_to_text.rb

@@ -0,0 +1,11 @@
+class ChangeJournalDetailsValuesToText < ActiveRecord::Migration
+  def self.up
+    change_column :journal_details, :old_value, :text
+    change_column :journal_details, :value, :text
+  end
+
+  def self.down
+    change_column :journal_details, :old_value, :string
+    change_column :journal_details, :value, :string
+  end
+end