fiedl/wingolfsplattform — pull request #60 by jbx26 (2014-10-22 05:36:31+00:00)
Title: Jb/649 horizontal caching

The horizontal navigation (and also the vertical navigation) are according to NewRelic profiling mostly slow because of the `Structurable:descendants`call. I decided to cache descendants internally and hope that it is not too often deleted.