Adding support for service operation decorators
Merge pull request #310 from shenrie/master

Adding support for service operation decorators
Agent persistence.
persistence setup and fsm start bug.
Fixed agent set bug.
Default persistence flags.
persistence flags and defaults.
Adds AttachmentType: REFERENCE
Merge pull request #311 from lukecampbell/attachments

Adds AttachmentType: REFERENCE
Bump ion-defs to merge commit
Merge branch 'master' of github.com:ooici/pyon into couch_timing
remove obsolete stats mechanism for couch