ENSWEB-5740: fix broken 'configure track display' button (#789)
ENSWEB-5740: fix broken 'configure track display' button (#789)


Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode