make delivery direct or not using configuration flag, use of new core delivery object
fix merge conflict
Merge branch 'gdchamal-parameters' into develop
lmtp and asyn deliver agent in caliopen.smtp.bin package
User.by_name in DeliveryAgent
Merge pull request #3 from gdchamal/user_rewrite

User rewrite
bad import
Merge pull request #4 from CaliOpen/develop

Develop