WIP: New split lib workflow

We need to:
- [ ] check that meta-analysis is still working
- [ ] finish preprocessing (split libs) connect per prep template
- [ ] make preprocessing async
- [ ] be able to connect to other studies raw data
- [ ] fix metadata summary per prep template
- [ ] add EBI submission
Why? flake8 wraps pep8. What this suggests is that code that gets merged should be of a common coding style with the rest of the project. Please use the same form that all other code within qiita uses (with the exception of this [line](https://github.com/biocore/qiita/blob/master/qiita_ware/wrapper.py#L115)).