Reinstate bigbed wiggles.
Reinstate bigbed wiggles.

Removed, probably accidentally, at 9fecdcf as part of a bigger change.

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