Fix extra code editor on Bibliotheca

[faloi]

Currently, the extra code editor has two issues:

• When definining a procedure, there is no way to set its name: it will always be "Hacer algo". Obviously, only one procedure could be defined because the second one will fail due to the duplicated name. Could be fixed by adding a property on gs-element-blockly that renders the text blocks on Bibliotheca.
• When the defined procedure uses any of the game procedures, the default code editor breaks. Probably, this is related to a wrong initialization order (the editor starts without primitiveProcedures properly configured.