Resolve "Fusionner les "select" avec "source" et les "select_custom""

Closes #483 (closed)

src/app/calculators/cloisons/config.json

@@ -16,16 +16,16 @@
         "id": "fs_ouvrage",
         "type": "fieldset_template",
         "calcType": "Structure",
-        "defaultStructType": "SeuilRectangulaire",
-        "defaultLoiDebit": "WeirSubmergedLarinier",
         "fields": [
             {
                 "id": "select_structure",
-                "type": "select"
+                "type": "select",
+                "default": "SeuilRectangulaire"
             },
             {
                 "id": "select_loidebit",
                 "type": "select",
+                "default": "WeirSubmergedLarinier",
                 "help": {
                     "OrificeSubmerged": "structures/orifice_noye.html",
                     "WeirSubmergedLarinier": "structures/fente_noyee.html",