Clean up Parsoid round-trip testing UI

Name and Contact Information
Name: Be Birchall

Email: 5xbebebebebe@gmail.com

IRC or IM networks/handle(s): be

Location: New York, NY, USA

Typical working hours: 9-5, Mon-Fri

Synopsis
This project is to work on Parsoid's round-trip testing UI, including refactoring the code using a templating system.