total bases and gene counts issues

[aclum]

These are null in the sdb file, b/c they are generated in a downstream step in the JGI workflow, as currently written this would get propagated to mongo via the json. Please update mbin_stats.py to calculate these on fly for json file that is output.

[chienchi]

Total bases can be counted with the bins fasta files. The gene count will need to wait till task package step when each bin linked with associated annotation files. So, the both total base and gene count function will be better to add in the create_tarfiles.py script and update the mags_stats.json file.