add filters, update api, update api docs

backend/modules/questionnaire/controllers/AnswerController.php

@@ -2,9 +2,12 @@
 
 namespace backend\modules\questionnaire\controllers;
 
+use console\controllers\MovingController;
 use Yii;
 use backend\modules\questionnaire\models\Answer;
 use backend\modules\questionnaire\models\AnswerSearch;
+use yii\helpers\Console;
+use yii\helpers\Html;
 use yii\web\Controller;
 use yii\web\NotFoundHttpException;
 use yii\filters\VerbFilter;