Rework tests structure. Upgrade codeception to 2.5.3. Merge params configuration into app configuration.

common/config/config-test.php

@@ -0,0 +1,23 @@
+<?php
+return [
+    'id' => 'common-tests',
+    'basePath' => dirname(__DIR__),
+    'params' => [
+        'fromEmail' => 'ely@ely.by',
+    ],
+    'components' => [
+        'security' => [
+            // It's allows us to increase tests speed by decreasing password hashing algorithm complexity
+            'passwordHashCost' => 4,
+        ],
+        'queue' => [
+            'class' => common\tests\_support\queue\Queue::class,
+        ],
+        'sentry' => [
+            'enabled' => false,
+        ],
+        'mailer' => [
+            'useFileTransport' => true,
+        ],
+    ],
+];