Adds foreign key restraints
Adds foreign key restraints

gedankenstuecke/snpr,philippbayer/snpr,gedankenstuecke/snpr,philippbayer/snpr,openSNP/snpr,vivekiitkgp/snpr,philippbayer/snpr,vivekiitkgp/snpr,vivekiitkgp/snpr,gedankenstuecke/snpr,vivekiitkgp/snpr,openSNP/snpr,openSNP/snpr,openSNP/snpr,gedankenstuecke/snpr,philippbayer/snpr