Pen Tool bugs

[Jayanta Das]

I noticed some bugs in Pen tool:

1. Undoing the third node, the segment should have its handle. Here it completely changed.

2. Closing cusp node always looks like this. I always have to delete the handle to solve this.

[VectorStyler]

@Jayanta-Das I added this to the backlog.

[VectorStyler]

@Jayanta-Das This problem should be fixed in 1.1.048