impc: refactoring with sex-specific genotypes
impc: refactoring with sex-specific genotypes

* use some new GENO classes for sex-specific genotypes
* clean up code/rearrange
* change stem cell class CL --> ERO
* type VSLC also as GVC
* remove complexity from ES line genotype partonomy
* make intrinsic genotype phenotyping-center specific
* test for cases when phenotype_id is blank

monarch-initiative/dipper,TomConlin/dipper,monarch-initiative/dipper,monarch-initiative/dipper,TomConlin/dipper