fixed bug in can_<do permission>? functions
fixed bug in can_<do permission>? functions

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