Trial of Couch Start Function for Fabfile

This adds a function to start couchdb. It calls the start command, which
works locally, but doesn't appear to start the process correctly on the
remote server. As well, the function to start tornado is still not
working and this may just be replaced w/ supervisor or another process
manager in the future anyhow. The error with tornado seems to be one
common to fabric starting indefinite processes.
Merge branch 'develop' of https://github.com/ruahman/swipe-technologies into develop