More code review

Refactoring of views.py. Docstrings for */__init__.py.
Even more code review

../api/models.py: s/__str__/__unicode__
admin.py: add models.Synthesis
models.py: add pluralization of Synthesis ("Syntheses")
views.py: docstrings everywhere
Merge branch 'master' of https://github.com/csvoss/carbonate