remove prefs from registrations controller, as its refered in users
remove prefs from registrations controller, as its refered in users

CDLUC3/roadmap,DigitalCurationCentre/roadmap,CDLUC3/dmptool,CDLUC3/dmptool,CDLUC3/roadmap,DigitalCurationCentre/roadmap,DMPRoadmap/roadmap,DMPRoadmap/roadmap,DigitalCurationCentre/roadmap,CDLUC3/dmptool,CDLUC3/roadmap,CDLUC3/dmptool,CDLUC3/roadmap,DMPRoadmap/roadmap