Activity enhancements:

* overall activity view and feed added, link is available on the project list (#423, #494)
* switch added on the project activity view to include subprojects (closes #530)

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1227 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/wiki_content.rb

@@ -61,6 +61,10 @@ class WikiContent < ActiveRecord::Base
       end      
     end
     
+    def project
+      page.project
+    end
+    
     # Returns the previous version or nil
     def previous
       @previous ||= WikiContent::Version.find(:first,