Serial dilutions

[jcasadogp]

Introduce in the YAML file, in the biological replicate, some field that indicates whether several samples come from the same precultivation but they were serially diluted. Also, include this field in the database. It should follow this logic:

A1:A8 (biological replicate location in the plate) come from the same precultivation, but A1=d1 rate, A2=d2 rate ... A8=d8 rate (add a serial dilution rate) and serial dilution identifier XXX for the 8 BR.