Parameter config: option to disable calculability in GUI

src/app/formulaire/elements/ngparam.ts

@@ -468,6 +468,9 @@ export class NgParameter extends InputField implements Observer {
         }
         this.unit = this.paramDefinition.unit;
         this.radioConfig = this.getRadioConfig();
+        if (json["calculable"] !== undefined && json["calculable"] === false) {
+            this.radioConfig = Math.min(ParamCalculability.FREE, this.getRadioConfig());
+        }
     }
 
     // interface Observer