docs: def set(self, name, default=0, editable=True, description=""):
          '''Define a variable in DB and in memory'''
  
          var, created = ConfigurationVariable.objects.get_or_create(name=name)
  
          if created:
              var.value = default
  
          if not editable:
              var.value = default
  
          var.editable = editable
          var.description = description
          var.save(reload=False)
  
          # ATTRIBUTES is accesible by any instance of VariablesManager
          self.ATTRIBUTES[var.name] = var.value