Adds 'Delete wiki pages attachments' permission.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@1938 e93f8b46-1217-0410-a6f0-8f06a7374b81

db/migrate/099_add_delete_wiki_pages_attachments_permission.rb

@@ -0,0 +1,13 @@
+class AddDeleteWikiPagesAttachmentsPermission < ActiveRecord::Migration
+  def self.up
+	Role.find(:all).each do |r|
+	  r.add_permission!(:delete_wiki_pages_attachments) if r.has_permission?(:edit_wiki_pages)
+  	end
+  end
+
+  def self.down
+	Role.find(:all).each do |r|
+	  r.remove_permission!(:delete_wiki_pages_attachments)
+  	end
+  end
+end