ENSWEB-2210: add previous action so that it can be used for exporting blast image
ENSWEB-2210: add previous action so that it can be used for exporting blast image

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