Toolbox Editor

[avivace]

We must implement a way to define categories, blocks and everything that is currently in the XML toolbox definition with serializable and templatable objects.

Related to #42

[previ]

@avivace have you seen the blockly toolbox example editor? (select tab "Workspace Factory")

[avivace]

This will influence #44 , too.
@previ I've seen that, but it heavily relies on Boostrap and JQuery. Currently working on something custom, manually defining and injecting blocks based on a JSON definition of the Toolbox.