new editor

# lib/component.oz
- The feature parentEntryPoint appears. All the component inside a sub-component have the access to his entry point. 
- bind/unbound send his error on the ERROR port

# components/QTk
There was a problem with the generated event. They were not aware of new "bind" action. Problem solved

# Editor
A new version with circle instead of rectangle. The port are defined when the line is clicked on.
Also, to rename the component, it's in the left panel when a component is clicked.