Show the user's favourite talks on their home page. 

This changeset shows the user's favourite talks on their home page. If they don't have any, they're encouraged to add some. This may resolve https://github.com/emfcamp/Schedule/issues/1; I'm not really sure what that ticket is asking for. 

Behind the scenes, it moves the events table out into a view helper. You pass it a set of event data, and it displays a separate table for both. It allows logged-in users to favourite/unfavourite events too. That way, the same code can be used for the events page and on the home page.