Remove fullstop from title
Update some post metadata, etc.
Strip | from post excerpts
Use bootstrap marketing templates

Update Twitter Bootstrap assests and switch to using templates based on
the narrow marketing example.

Make various changes to the code to use excerpt fields (when specified),
generate an archive and index with similar code, and more.
Add archives page
Add metadata to some pyconau2012 posts
Tweak index page copy
Use jumbotron styles for post headings
Add locations to some posts
Titles and such for tag pages
Remove author and location
Header & footer tweaks