CyrilFerlicot

Tested with TelescopeCytoscape. Executing this: ```st visu := TLVisualization new. visu addNodesFromEntities: (1 to: 20). visu open ``` does not open any visu the first time. Then executing this: ```st...

We do not need two groups for every module. We need test if we develop Telescope and in that case just bring all tests together.

Such as: - #connectionHeadShapesAvailableForConnector - #nodesShapesAvailableForConnector

Because this is not the right orientation for this kind of layout. I used a #rightToLeft and the result is closer to the #topToBottom