Added description to each test config of advanced application

apps/advanced/tests/codeception/config/backend/acceptance.php

 <?php
 defined('YII_APP_BASE_PATH') or define('YII_APP_BASE_PATH', dirname(dirname(dirname(dirname(__DIR__)))));
+
+/**
+ * Application configuration for backend acceptance tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/common/config/main.php'),
     require(YII_APP_BASE_PATH . '/common/config/main-local.php'),

apps/advanced/tests/codeception/config/backend/config.php

 <?php
+/**
+ * Application configuration for all backend test types
+ */
 return [];
\ No newline at end of file

apps/advanced/tests/codeception/config/backend/functional.php

@@ -2,6 +2,9 @@
 $_SERVER['SCRIPT_FILENAME'] = YII_TEST_BACKEND_ENTRY_FILE;
 $_SERVER['SCRIPT_NAME'] = YII_BACKEND_TEST_ENTRY_URL;
 
+/**
+ * Application configuration for backend functional tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/backend/config/main.php'),
     require(YII_APP_BASE_PATH . '/backend/config/main-local.php'),

apps/advanced/tests/codeception/config/backend/unit.php

 <?php
 
+/**
+ * Application configuration for backend unit tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/common/config/main.php'),
     require(YII_APP_BASE_PATH . '/common/config/main-local.php'),

apps/advanced/tests/codeception/config/console/unit.php

 <?php
-
+/**
+ * Application configuration for console unit tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/common/config/main.php'),
     require(YII_APP_BASE_PATH . '/common/config/main-local.php'),

apps/advanced/tests/codeception/config/frontend/acceptance.php

 <?php
 defined('YII_APP_BASE_PATH') or define('YII_APP_BASE_PATH', dirname(dirname(dirname(dirname(__DIR__)))));
+
+/**
+ * Application configuration for frontend acceptance tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/common/config/main.php'),
     require(YII_APP_BASE_PATH . '/common/config/main-local.php'),

apps/advanced/tests/codeception/config/frontend/config.php

 <?php
+/**
+ * Application configuration for all frontend test types
+ */
 return [];
\ No newline at end of file

apps/advanced/tests/codeception/config/frontend/functional.php

@@ -2,6 +2,9 @@
 $_SERVER['SCRIPT_FILENAME'] = FRONTEND_ENTRY_FILE;
 $_SERVER['SCRIPT_NAME'] = FRONTEND_ENTRY_URL;
 
+/**
+ * Application configuration for frontend functional tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/common/config/main.php'),
     require(YII_APP_BASE_PATH . '/common/config/main-local.php'),

apps/advanced/tests/codeception/config/frontend/unit.php

 <?php
 
+/**
+ * Application configuration for frontend unit tests
+ */
 return yii\helpers\ArrayHelper::merge(
     require(YII_APP_BASE_PATH . '/common/config/main.php'),
     require(YII_APP_BASE_PATH . '/common/config/main-local.php'),