Ordered replace

Make GraphView::replace() respect inputs/outputs order.

This was typically an issue with expandMetaOps().

Implementation idea:

• Save the ordered inputs/outputs vectors of all the commonGraphViews containing old nodes;
• After nodes replacement, replace all oldOIn/oldOOut inputs/outputs with newOIn/newOOut in the previously saved ordered inputs/outputs, and set commonGraphViews ordered inputs/outputs to these edited vectors;
• This works only when the number of new inputs/outputs is less or equal to the old numbers (if the new number is less, the extra old inputs/outputs are simply removed).