toString override in MutableGraph
Loading the network from the model object of PATH
Merge branch 'master' into InterfaceWithPath
BugFix in the toString() of nodes
Merge branch 'master' into InterfaceWithPath
Added a function to check that a network empties
Merge branch 'master' into InterfaceWithPath
Profile copy added
Merge branch 'master' into InterfaceWithPath
Profile copy added
Merge branch 'master' into InterfaceWithPath
More parsing added. It now blocks on the origin/destination definition

Origins and destinations nodes are not defined in the PATH format.
One can obtain the origins links and then define the previous node as origin
nodes. For the destination, we can only suppose that all destinations nodes
are the one with no outgoing links.
Fixed parsing of split ratios. Now the demand is blocking.