Add reproducible workflow lesson
python/reproducible_workflow.md: Remove trailing whitespace
lessons/misc-reproducibility: Use new bc directory structure
lessons/misc-biopython/reproducible_workflow.md: Remove history-less content
Merge branch 'jkitzes-reproducible' into jkitzes_credit
updated lessons index with @jkitzes credit
Merge remote-tracking branch 'ahmadia/jkitzes_credit'

* amhadia/jkitzes_credit:
  updated lessons index with @jkitzes credit
  lessons/misc-biopython/reproducible_workflow.md: Remove history-less content
  lessons/misc-reproducibility: Use new bc directory structure
  python/reproducible_workflow.md: Remove trailing whitespace
  Add reproducible workflow lesson
git backup intro lesson now introduces the basic concepts of git structure