Change the way tRNAs and rRNAs are found
Change the way tRNAs and rRNAs are found

The code to find tRNAs and rRNAs in the genome summary had a requirement
in the predicate that the feature must have a "gene" qualifier, but most
of the genomes we have imported don't have them, so I removed it.

peteashton/symbionts.org,peteashton/symbionts.org,peteashton/symbionts.org