Account creation user experience/Engineering/Experiment

Front-end API

 * Ensure that API conforms to WMF JavaScript guidelines and effectively uses jQuery over the DOM API for consistency and cross-browser compatability
 * Research real-time username checking in accordance with our Username Policy (e.g. check for notable names, usage of the word "bot," etc.)
 * Check for matching password fields
 * Conditionally check if email is valid
 * Do not store password length or any other security configuration variables to window, add it to the mw API.
 * Insert CAPTCHA into the correct location