Compute completeness on import
Compute completeness on import

This makes the imported sequence region and model region include the
completeness column. Previously I just ran an update table statement to
do this, but doing so makes the importing messier and harder to get
right.

RNAcentral/rnacentral-webcode,RNAcentral/rnacentral-webcode,RNAcentral/rnacentral-webcode,RNAcentral/rnacentral-webcode