fixed issue with text downloads
fixed issue with text downloads

switched is_a? to respond_to?

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