Realtime re-enabled

This release is to mark the solution of #25

Old model was to fetch atom feeds of all watched repos every minute. It worked great when there were <500 repos, but it did not scale well when that number increased to 11k+. Main problem with it was the cost of upload traffic those requests were making

The new model is to monitor GitHub public events and every minute fetch only those repos for which there were release events recently. Every hour though it falls back to the old model, to cover the case of events missed by gitpunch server

Other things that happened since last release:

• Fix of #27 which was making gitpunch.com unusable on some browsers
• Subject of emails was optimised once again to give more info with less characters (#28), tell me what you think
• Old website winabeer.com now redirects to gitpunch.com even if you had winabeer cached (683721e)