Add mission messages for GraphQL and natwork errors

aleksis/core/assets/app.js

@@ -123,7 +123,7 @@ function addErrorSnackbarItem (messageKey) {
 const retryLink = new RetryLink();
 
 const errorLink = onError(({ graphQLErrors, networkError }) => {
-  if (graphQLErrors) addErrorSnackbarItem("graphql_errors.snackbar_error_message")
+  if (graphQLErrors) addErrorSnackbarItem("graphql.snackbar_error_message")
 
   if (networkError) addErrorSnackbarItem("network_errors.snackbar_error_message")
 });

aleksis/core/assets/messages/en.json

@@ -175,11 +175,15 @@
   "network_errors": {
     "error_404": "404",
     "page_not_found": "The requested page or resource could not be found.",
-    "take_me_back": "Take me back"
+    "take_me_back": "Take me back",
+    "snackbar_error_message": "A network error occurred. Please try again."
   },
   "service_worker": {
     "new_version_available": "A new version of the app is available",
     "update": "Update",
     "dismiss": "Dismiss"
+  },
+  "graphql": {
+    "snackbar_error_message": "There was an error retrieving the page data. Please try again."
   }
 }