moving Initial Setup steps to docs subpage
prepopulate Post.slug from Post.title in the admin
add search_fields and list_filter to PostAdmin
add 'body_markdown' to PostAdmin search_fields
give short_description to PostAdmin get_tags method
adding fieldsets to PostAdmin
minor help_text edit to Post.body_markup
Post.body_markup should be blank=True so that it can generate markup upon initial save