addCategory

FATCA Comms
RESTful delivery routes
status page
Mailing thread loops every 1 hour
rescue and log mailing thread
Merge lib/dpd_reports into Mailing model

Each reports is also now added to the db immediately after being read,
which should prevent multiple reports being lost if there is an error
after reading, but before adding to the db.
delivery route can respond with json
Permissions for JSONP
split json callback into filter
Delivery logic to model. Tidy routes.
Better Mailing thread error logging
Mailing.lookup return m unless dpd_ref
Ignore .DS_Store
Merge branch 'master' into openshift

Conflicts:
	models/mailing.rb