Add french translation and strings improvements (#49)

Reusing work done on strings.json done in #37

custom_components/integration_blueprint/translations/en.json

@@ -1,6 +1,5 @@
 {
     "config": {
-        "title": "Blueprint",
         "step": {
             "user": {
                 "title": "Blueprint",
@@ -15,7 +14,7 @@
             "auth": "Username/Password is wrong."
         },
         "abort": {
-            "single_instance_allowed": "Only a single configuration of Blueprint is allowed."
+            "single_instance_allowed": "Only a single instance is allowed."
         }
     },
     "options": {

custom_components/integration_blueprint/translations/fr.json

@@ -0,0 +1,31 @@
+{
+    "config": {
+        "step": {
+            "user": {
+                "title": "Blueprint",
+                "description": "Si vous avez besoin d'aide pour la configuration, regardez ici: https://github.com/custom-components/integration_blueprint",
+                "data": {
+                    "username": "Identifiant",
+                    "password": "Mot de Passe"
+                }
+            }
+        },
+        "error": {
+            "auth": "Identifiant ou mot de passe erroné."
+        },
+        "abort": {
+            "single_instance_allowed": "Une seule instance est autorisée."
+        }
+    },
+    "options": {
+        "step": {
+            "user": {
+                "data": {
+                    "binary_sensor": "Capteur binaire activé",
+                    "sensor": "Capteur activé",
+                    "switch": "Interrupteur activé"
+                }
+            }
+        }
+    }
+}

custom_components/integration_blueprint/translations/nb.json

@@ -1,6 +1,5 @@
 {
     "config": {
-        "title": "Blueprint",
         "step": {
             "user": {
                 "title": "Blueprint",
@@ -15,7 +14,7 @@
             "auth": "Brukernavn/Passord er feil."
         },
         "abort": {
-            "single_instance_allowed": "Du kan konfigurere Blueprint kun en gang."
+            "single_instance_allowed": "Denne integrasjonen kan kun konfigureres en gang."
         }
     },
     "options": {