fixed a condition with mv machines so as to not power down machines with stuff to grind/smelt but nothing to tube out
Merge pull request #64 from hdastwb/mvidlecond

fix the mv tube-enabled idle condition
Deployer and node breaker are now moved to pipeworks.
simplified a statement
Finaly fixed the statements

The idle condition for mv mashines is changed to what it should be
because sending items into the tube is done in idle, so we only care
if there is something left in src