Not compatible to NC 15

I tested compatibility of gpxpod, gpxedit and gpxmotion in NC 15 RC3 by manually changing their max Version from 14.0.9 to 15.0.9. While gpxedit and gpxmotion worked as expected in my short test I found gpxpod to work only mostly. Nevertheless the max Version should be bumped for all three before the final release of NC 15 is out.