Removed Filter and FilterServlet from 'webdefault.xml', which was
causing every request to be filtered twice for apps that also had them
defined within their 'web.xml'.
Fixed character encoding bugs within our caching response wrapper, so
that our first test utilizing a browser encoding other than UTF-8 is now
working.
Start making use of the setContentType() and setCharacterEncoding()
methods, rather than using the more generic setHeader() method.