Panels

The editor have now two panels : editorPanel and graphPanel.
The graphPanel display the graph and is used to make the link.
The editorPanel is used for all edition features : add new comp, delete a link, ...

It's still experimental, and here is a small list of "bugs" : 
- The panel width is not fixed
- SIngle click on component is used for show/hide port and access to the component edit options. Idea of fix : First click to access to the edit options. If the component is clicked again while already display in editPanel, then show/hide ports.
- ugly...