Improved Redmine links:

* issue and changeset links generated only if the object exists
* issue subject and status appear in the link title
* strike issue link if issue is closed
* red wiki page link if page doesn't exist
* new icon for external links

Wiki page cache had to be disabled.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@714 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/project.rb

@@ -33,6 +33,7 @@ class Project < ActiveRecord::Base
   has_many :issue_categories, :dependent => :delete_all, :order => "#{IssueCategory.table_name}.name"
   has_many :boards, :order => "position ASC"
   has_one :repository, :dependent => :destroy
+  has_many :changesets, :through => :repository
   has_one :wiki, :dependent => :destroy
   has_and_belongs_to_many :custom_fields, :class_name => 'IssueCustomField', :join_table => "#{table_name_prefix}custom_fields_projects#{table_name_suffix}", :association_foreign_key => 'custom_field_id'
   acts_as_tree :order => "name", :counter_cache => true