initial work on Job model
Merge branch 'master' into jobs
simplified jobs model
proper date defaults for Job model, save method for unique slugs with pks
reasonable admin for Job model
display some jobs on a basic template
add RSS feed for jobs
add json feed for jobs
add `tweeted_at` timestamp field for Job model
initial management command to collect job records for posting to Twitter
style the job list page
add job-specific email field
better responsive style for job list
add job listings to organization pages
automatically close person edit form on save
smarter JSON encoder for date handling
organization admins can update existing jobs from admin panel
organization admins can create new jobs from admin panel
management command posts new job listings to Twitter account
madlib-style constructs for job tweets