First rough stab at atom feed for events
timezonelinks added for classes that haven't expired
Removed old class postings

Also modified the index files of each class type to display a
message when no classes were present based on if there was
even 1 tag present.

Checking for the tag also allowed stub files in the in-person
class section. This stub doesnt seem to be needed in web-based
because most of the files are duplicates anyways.
Additional in person special events added.

Also fixed the in-person special event index to include time
Merge pull request #64 from brntbeer/event-listings-cleanup

Event listings cleanup
Merge pull request #53 from github/atom-feed

First rough stab at atom feed for events
Fixed Tim's Gravatar
2013