changed dnafrag_type enum. possible values now 'Slice' and 'Chromosome' only
changed dnafrag_type enum. possible values now 'Slice' and 'Chromosome' only

dbolser-ebi/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,kumarsaurabh20/ensembl-compara,ckongEbi/ensembl-compara,danstaines/ensembl-compara,etapanari/ensembl-compara,Ensembl/ensembl-compara,etapanari/ensembl-compara,etapanari/ensembl-compara,kumarsaurabh20/ensembl-compara,kumarsaurabh20/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,kumarsaurabh20/ensembl-compara,Ensembl/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,etapanari/ensembl-compara,dbolser-ebi/ensembl-compara,ckongEbi/ensembl-compara,Ensembl/ensembl-compara,ckongEbi/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,danstaines/ensembl-compara,dbolser-ebi/ensembl-compara