Added function for getting list of attributes with all numerical values (that can be used with the 'Filter by value' feature)
Added function for getting list of attributes with all numerical values (that can be used with the 'Filter by value' feature)

genenetwork/genenetwork2,zsloan/genenetwork2,pjotrp/genenetwork2,pjotrp/genenetwork2,pjotrp/genenetwork2,genenetwork/genenetwork2,pjotrp/genenetwork2,zsloan/genenetwork2,genenetwork/genenetwork2,pjotrp/genenetwork2,genenetwork/genenetwork2,zsloan/genenetwork2,zsloan/genenetwork2