key 'label_left added to optionally align the label to left and checkbox to right
key 'label_left added to optionally align the label to left and checkbox to right

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