Http refactoring
missing file
Upgrade to netty 4.0.20.Final
more Http and Net refactoring
Change EventBus register/unregister API to use registration object.

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Don't require callback for registerHandler. Return EventBus again for registerHandler

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Rename EventBusRegistration to just Registration

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Make registerHandler return Registration immediately.

Signed-off-by: nscavell <nick.scavelli@gmail.com>