- added hackish support for multiple caracter text (result is far from perfect)
- added workaround for font awesome unicode caracters
- minor cleanups
- added "value" field to "Creation" operation:
 * it gets filled with the parameters used to create an object
- added Creation parameters support for code generator
- added on screen editing (custom on screen controls) for text
 * just a hack
 * good starting point to see how to enter parameters for the parametric aspect of shapes & parts
 * added parameters/options injection to "Creation" operations instanciation
 * various minor related tweaks
- updated cube-editor / shape creator:
 * all basic parameters are present
 * updated template
 * added calling of target's update method on properties change

- added text-editor based on cube-editor:
 * controls for text, font, size
- added "update" method to Parts, so that they can be altered
more easilly after being created (experimental)
 * added specific implementation for Cube (main test case for now)
- modified "update" method of Shape2d & text to match a bit closer the one from
Parts / Shape3d's :
 * quite a bit broken for now, need to rethink the order of many operations:
 * in particular when and how to update visuals based on changed attributes/regenerated elements
- replaced "hackish" text editor with text editor from shape-creator custom element
- added cube editor
- trying to find a good ui logic for editing new & already existing object's parameters
 * various related tweaks
 * see above