0 seqs checking of Per_sample_raw_reads

[mcnelsonphd]

Right now the script passively allows samples to have 0 sequences found in the input seqs.fna file and the output raw read files. Ideally the script would have some sort of error checking that would at least print that this occurred and possibly kill the script if desired.

[mcnelsonphd]

The script ideally needs to at the minimum throw a warning about 0 seq instances and should automatically delete 0 byte raw files to prevent them from being gripped. If the end-user isn't careful enough then they likely won't look at the log file to see which samples had 0 seqs in the input seqs.fna file and there's currently no reporting if there were no seqs found in the raw files.