Make running tests more robust and drop dependency to python-couchdb
Make running tests more robust and drop dependency to python-couchdb

This commit changes a few things, mainly:

 - Instead of sleeping for 1 second, actually wait for the couchdb to
   spin up

 - Use tornado.httpclient.HTTPClient to delete the old test databases.
   This removes dependency to python-couchdb.

inoi/trombi