Use v1.0.2 of the Hierarchical visualization

[jecisc]

• Add submenu for different kinds of layouts
• Add layout submenu per node instead of per canvas
• Lazily compute labels

With this we gain an additional 20% of perfs in the architectural visualization and probably other visualizations using this hierarchical

[NicolasAnquetil]

There should already have been a re-layout option in the menu of the nodes ??? (fourth option)

[jecisc]

This does not relayout the whole visu but just one node.