add timestamp to base template to check on caching
remove per-site caching from middleware
use cache_page on views instead, don't need to adjust for Vary header for now
migrate utils into their own app directory
add utilities for cached page invalidation
post_save cache invalidation for articles
post_save cache clearing for code, person, organization models
add django_pluralize template filter
add author bios to article detail page
fix id attr for bio h3s
size twitter avatar img to normal 48px
fix author box p in case of one-line bio
Merge branch 'authors' into caching
add view to trigger cache clear for path
add homepage cache clear link to admin
add same-origin ajax handling
add ajaxy cache clear link to admin index
remove auto homepage cache clear from article, code saves
merge caching branch
add typogrify