Network render 7

[PeterSwift]

When a computer disconnect from the network render instead of sending that task to someone else the whole system stops and just waits for it to come back online.
And also an idea. The network render splits up a render into 20-30 tasks. It's too few pieces.  Because if it's a heavy render and most of the computers in the render farm uses 8 cores if then one computer uses 1-2 cores. The whole render can be stuck and just be waiting for that computer to finish.

the estimated time is way off in the new network render at least on unstarted renders. Just dont show any estimated time at all.