Move blobtools analysis to independent pipeline, controlled by bgrrl.py

[cschu]

This way, blobtools analysis can be used easily, and without redundant code, to identify tadpole survey contigs. In turn, this allows the qc-module to be run to assess the taxonomic composition of microbial genomic data in general, without intention to assemble.

[cschu]

Implemented in qaa. https://github.com/cschu/qaa