Resolve "Réorganisation criterion (null, not null)"

Closes #41 (closed)

client/src/app/instance/search/components/criteria/search-type/checkbox.component.ts

@@ -30,13 +30,15 @@ export class CheckboxComponent extends AbstractSearchTypeComponent {
 
     setCriterion(criterion: Criterion) {
         super.setCriterion(criterion);
-        this.form.controls.label.setValue('In');
+        
         if (criterion) {
             for (let i = 0; i < this.attribute.options.length; i++) {
                 if ((criterion as SelectMultipleCriterion).options.find(o => o.label === this.attribute.options[i].label)) {
                     this.getCheckboxes().controls[i].setValue(true);
                 }
             }
+        }else{
+            this.form.controls.label.setValue('In');
         }
     }