Improved Project#copy to copy more data from the source Project. #3367

* Versions
* Associate the copied issues with the new versions
* Wiki
* WikiPages
* WikiContents
* IssueCategories

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2934 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/exemplars/user_exemplar.rb

@@ -1,4 +1,4 @@
-class User < ActiveRecord::Base
+class User < Principal
   generator_for :login, :method => :next_email
   generator_for :mail, :method => :next_email
   generator_for :firstname, :method => :next_firstname