Rename the grun "test" task to "test:server".

Add a new task "test" that tests both server and client.
First steps towards being able to configure graph X axis (time window).
Remove the RabbitMQ SUB socket onReady handler.

We don't need to wait for the socket to be ready to do anything in particular.
Bind the RabbitMQ socket before any clients connect.

This allows us to start forwarding packets to MongoDB. Also it adds support for
multiple connected clients without multiple SUB sockets duplicating the
processing of the same data.
Forward all packets received from RabbitMQ to MongoDB.