DOC: test organization
Documenting the MO behind the test organization we've been doing.

1) I expect this is not valid rst ATM
2) The style does not match the rest of the docs, so probably needs a re-write.


thanks @jbrockmendel very nice i think this might have been merged prematurely, the docbuild is complaining about rst stuff i need to figure out @jbrockmendel if you push your branch again, I *think* you should be able to reopen the PR (unless you also already deleted the branch locally), and then we can work out the failures here