Improve registration file schema
Currently, the registration files look something like:
H-H1_HOFT_C00:
scope: "ER8"
regexp: "H-H1_HOFT_C00"
minimum-gps: 1123858817
maximum-gps: 1126623617
Probably better to call the dataset name out explicitly:
dataset: H-H1_HOFT_C00
scope: "ER8"
regexp: "H-H1_HOFT_C00"
minimum-gps: 1123858817
maximum-gps: 1126623617