Changes
/* 2.5.3 */
=== Enhancements ===
* UBIK MRO supports an "MRO_ACTIVE" property (type boolean) on every MRO object. This gives the possibility to easily exclude objects from the MRO evluation process by just returning false (e.g. old Workpackges which should not effect the progress of their owner any more).
=== Bugfixes ===
