Can reload survey

lib/helpers/survey_helper.dart

@@ -8,6 +8,13 @@ import 'package:meta/meta.dart';
 /// @author Pierre HUBERT
 
 class SurveyHelper {
+  /// Get information about a single survey
+  static Future<Survey> getSurveyInfo(int postID) async =>
+      apiToSurvey((await APIRequest.withLogin("surveys/get_info")
+              .addInt("postID", postID)
+              .execWithThrow())
+          .getObject());
+
   /// Cancel the response of a user to a survey
   Future<bool> cancelResponse(Survey survey) async {
     return (await APIRequest(