todo list of things for schema 20:

=== To add  or think about adding ===
 * galaxy shape parameters measured in forced warp are missing in schema
 * detection efficiency measurements

=== To fix (from sas37) ===
 * drop skycell from DO
 * populate qfperfmax in DO (it's grabbed from the dvo, it is not filled in the dvo)
 * ra/dec err in DO dvo is empty
 * is there a mean flux or something we can add to DO? it's a pretty useless table otherwise
 * FO has no random number?
 * FO has ()stackID - drop it, it is meaningless
 * FO gamma/ E1 /E2 are currently empty (filled from DVO, it is not filled in dvo)
 * FW Lensing / FM Lensing need psf_E1,psf_E2 fields