accommodation: update FunKey offer
layouts: we have 'events', not 'sessions'
buildings: AW is not an office building after all!
util: hack around _ at the end of filenames

I'm not sure why this gsub was ever here at all.  We should keep an
eye on it.  If things break because it's gone, it should be puck back.
Or better yet ... we should figure out what it's for!