#59 big blob handling in client connections

[Richard van Nieuwenhoven]

Blobs can get very big and take up a big chunk of time to transport to the connected client. During this transport that can take more than a few seconds, the connection is blocked for other informations (like telescope tracking).

Lets diskuss here it it would be good to have a client server connection that contains 2 connections, one for the blobs and one for the rest?

Second connected discussion: Should this second connection be behind a INDIServerConnection or should it be a spesial INDIConnection that contains 2 INDIConnection's?