chore(i18n): add new words

public/i18n/en.json

@@ -31,10 +31,14 @@
       "establishments":"establishments",
       "new_establishment": "new establishment",
       "edit_establishment": "edit establishment"
+    },
+    "product": {
+      "products":"products"
     }
   },
   "common": {
     "address":"address",
+    "barcode":"barcode",
     "name":"name",
     "save": "save",
     "update": "update",

public/i18n/es.json

@@ -31,10 +31,14 @@
       "establishments":"establecimientos",
       "new_establishment": "nuevo establecimiento",
       "edit_establishment": "editar establecimiento"
+    },
+    "product": {
+      "products":"productos"
     }
   },
   "common": {
     "address":"dirección",
+    "barcode":"código de barras",
     "name":"nombre",
     "no_file_yet": "Sin carga",
     "save": "guardar",

public/i18n/pt.json

@@ -31,10 +31,14 @@
       "establishments":"establishments",
       "new_establishment": "new establishment",
       "edit_establishment": "edit establishment"
+    },
+    "product": {
+      "products":"products"
     }
   },
   "common": {
     "address":"address",
+    "barcode":"barcode",
     "name":"name",
     "save": "save",
     "update": "update",