Allyson Miller over at SWAMP is handling as much of HTCondor Week as is possible these days, especially arranging venue and catering. Sure has access to all of the Google Drive documents. As of January 2016 we have permission to move as much of it to her as possible.
Allyson can likely to take over some of the fiddly details like running the website and uploading slides. Someone geeky and Perl oriented will likely be necessary for deeper changes.
Documentation on the web site is in /p/condor/public/html/htcondor/HTCondorWeek2016/edit/README . In summary: it's in its own Git repository, it's not part of the main web site, it uses Perl and the very lightweight Text::Template library, which is already installed as a subdirectory so you probably won't need install it yourself.
When in doubt, look in /p/condor/public/html/htcondor/HTCondorWeek2015/edit/ to see how something was done last year.
Take a deep look at the "Files of note" documented in the README. That's the stuff I'd expect a staff member to have to change. Take a more shallow peek at the "Files of note; internal"; hopefully you won't have to do much with them.
To an extent using Alan's templating system is an experiment. If it's a mess, jump to something else. We may be able to use CERN's install of Indico for free (example: https://indico.cern.ch/event/467075/ ).