Add a new "Pinata" app to manage static content
Fix up local navigation for Pinata
Improve path handling
Add staff bio handling

Give Classes__Bios the ability to handle staff bios as well, and define
staff roles under a new Roles object
Add admin-specified sort order for Pinata pages
Publish blog posts using the Pigeon app
Merge master into integrated_site
Fix migrations; add file upload field to bios
Add department labels to blog
Basic staff bios
Author lists now support Oxford commas
Publish blog posts through an RSS feed
Add labels for blog posts
Improve blog appearance
More details and additional desc field for staff bios
Spacing around bios and H3s
Fine-tune spacing
Add basic front page functions

Matches existing HTML/CSS site, but with slides and notices editable
from admin
Pass user data to Pinata templates
Pinata: fix sidebar on static pages and fix user login status in menu bar