Merge pull request #2605 branch 'feature' of https://github.com/mongosoft/yii2 into code-style

* 'feature' of https://github.com/mongosoft/yii2:
  returned back formatting language files
  code style. WHILE
  code style. FOR
  code style. FOREACH
  code style. operator IF
  @param, @var, @property and @return must declare types as boolean, integer, string, array or null
  short echo tags
  short array syntax

Conflicts:
	extensions/apidoc/commands/RenderController.php
	extensions/apidoc/models/BaseDoc.php
	extensions/apidoc/models/Context.php
	extensions/apidoc/templates/bootstrap/Renderer.php
	extensions/apidoc/templates/bootstrap/layouts/guide.php
	extensions/apidoc/templates/bootstrap/layouts/main.php
	extensions/apidoc/templates/bootstrap/views/index.php
	extensions/apidoc/templates/html/Renderer.php
	extensions/apidoc/templates/offline/views/index.php
	extensions/apidoc/templates/offline/views/offline.php
	extensions/apidoc/templates/online/views/index.php
	extensions/elasticsearch/Connection.php
	extensions/redis/ActiveQuery.php
	framework/base/ErrorException.php
	framework/helpers/BaseFileHelper.php
	tests/unit/framework/helpers/FileHelperTest.php

models/User.php

@@ -92,7 +92,7 @@ class User extends \yii\base\Object implements \yii\web\IdentityInterface
 	 * Validates password
 	 *
 	 * @param string $password password to validate
-	 * @return bool if password provided is valid for current user
+	 * @return boolean if password provided is valid for current user
 	 */
 	public function validatePassword($password)
 	{