Fix bad heading offset if an event doesn't have an image
Improve navigation from regular events
Add a note about documents
Moving some non-essential things to 1.1
Use slugs for attaching documents to content
Slim down number of imports needed
Simplify the Markdown for documents
Add a note about inserting documents
Sorting class members
Add support for importing attachments
Add creation time on sermons
Store sermon creation time correctly
Fixes #4 - add support for a podcast

Podcast downloads are tracked separately from direct sermon
downloads.