Prepare web application to run from nodejs

See README for usage
Convert parser to work on both NodeJS and the browser
Add support in the API for logging in and registering
Add API docs to the README for login/registration
Convert from using mysql to mongodb
Add note about python2 being a required dependency

Some systems do not come with python installed, which could lead to
some annoying/cryptic errors, so I explicitely added it to the README
as a requirement
Update code docs about database, remove files

Remove unused files from the application
Add some inline documentation about using the `data/connection.js` module.
Merge pull request #1 from boddie/nodejs

Nodejs