last refactor before release wip

this is just a temporary work while i'm traveling. The hd start to be tired
and will probably crash. so let's store it somewhere.
more refatoring. most of the manager tests pass
fix tests
s/stop/stopped.

while i'm here remove spurious prints
fix basic HTTP to use the new manager API.
fix events & test_webhooks

job events are now prefixed by `job.` and process events are prefixed by
`proc.` like it should be.
fix internal channel api
fix gaffer command and console output.