Use proper logger instead console.log

[Bigomby]

Currently the application is using console.log for logging. We should avoid using it on production, instead a proper logger should be used.

I propose pino, which has good performance and outputs useful info for production environments and pretty logs in development environments.

[mariopino]

Hey @Bigomby, is something blocking this? I think we just need to:

• Research how to integrate with docker logs and include in documentation. Note that main goal for logging at this stage is to help debugging and I think a more human logging would help. Reference: pretty logs with docker pinojs/pino#178
• Replace all console.log by pino logger calls in all places.