Makes issue description a non-required field (#2456).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2246 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

@@ -45,7 +45,7 @@ class Issue < ActiveRecord::Base
   acts_as_activity_provider :find_options => {:include => [:project, :author, :tracker]},
                             :author_key => :author_id
   
-  validates_presence_of :subject, :description, :priority, :project, :tracker, :author, :status
+  validates_presence_of :subject, :priority, :project, :tracker, :author, :status
   validates_length_of :subject, :maximum => 255
   validates_inclusion_of :done_ratio, :in => 0..100
   validates_numericality_of :estimated_hours, :allow_nil => true