Enhancement: Logging system

[PEM--]

Currently, Orion's logs are mixed with application logs which leads to incomprehensions from users / developers.

I propose that we use which provides a good isolation as well as levels: https://atmospherejs.com/jag/pince.

I've used it on an app and it behaves properly with Orion separating my app logs from the one of Orion.

[gam-ragnar]

Logging is a big deal are your proposing core makes this a dependent?

[PEM--]

Yep. Currently, there console.log everywhere. They mix with developper's log. Thus, they can't understand if stuff is going badly owing to them or Orion.

[gam-ragnar]

Do a PR

[PEM--]

PR done #271

😄