Future drift

Created by: S-Stephen

During Django app development I occasionally have to manually trigger my windows client to NTP synchronise following a 'request in the future' response from the development raven service. Having spoken to other django developers within UCam this seems to be the case for others too.

The process to manually synchronise is quite frustrating (Windows), so I would like to propose an extra, optional, config variable UCAMWEBAUTH_NTPDRIFT which allows the admin to set the number of milliseconds it will allow a response to be appear in the 'future'.