Change confirmation for flow changes

[saherr1969]

Arrrrrgggghhh... I just deleted a couple of connecting lines in a flow and accidentally hit the back key and lost the whole flow. I would like a change confirmation when backing out of a flow like you have for individual steps in the flow.

[Martin]

The next version will keep disconnected actions and conditions so you can hit back and reopen the flow without losing the disconnected parts of the flow.