Removing an edge in undirected Graphs does not update the outDegree of the target node

[Dimitris Kalamaras]

1. Create a connected network of three nodes:

0 1 1
1 0 1
1 1 0

2. Every node has degree 2 (outDegree 2 and inDegree 2)

3. Remove an edge, i.e. the edge 1 <-> 2

4. Node 1 inDegree and OutDegree becomes 1 but node 2 out-Degree remains 2.

This is remedied by the fact that once the network is saved and reloaded, correct degree values are computed. Nevertheless, without saving and reloading the network, every time the user removes an edge, a wrong outDegree value is being presented for the target node.