All in one application - that is Easy Redmine
RTL Radio use Easy Redmine to maintain help desk, resources, attendance and of course all IT and software projects. We like the complexity - using all-in-one solution is just wonderful.
Recently released Redmine 2.5.2 is now the official supported version for direct upgrade to Easy Redmine.
Packages in client zone contain Redmine 2.5.2. Upgrading procedure remains as listed here: http://www.easyredmine.com/upgrading-with-a-complete-package-from-client-zone