bumped ion defs and refactored publish_event() and publish_event_obj() of UNS
got test for publish_event_object() working'
Fixed publish_event() and got test for it working
fixed back two tests
fixed test_get_recent_events(). Now just one more test to fix
fixed test_batch_notifications()
using get_ion_ts() throughout UNS
bumped ion defs
referencing the latest ion defs from master after having merged ion defs
Merge branch 'master' into publish_event_obj
Merge pull request #547 from swarbhanu/publish_event_obj

Refactors publish_event() and publish_event_object() of UNS