HscMapper: add validity range for bias, dark

Couldn't have more than one bias or dark in the registry
("RintimeError: No unique lookup for bias from ['calibDate', 'calibVersion'] from {'filter': 'NONE', 'ccd': 108, 'visit': 1136}: 2 matches").
Adding validty ranges fixes this.
Merge branch 'releases/S14A_0'