* master: (22 commits)
  Fixes #4971: Fixed hardcoded table names in `viaTable` expression in model generator
  Fixed test break.
  Fixes #4955: Replaced callbacks with events for `ActiveForm`
  Fix brackets
  Rename `\yii\web\User` component param for consistency
  Html::button() type is `button` by default
  Fix bug in Estonian translation
  Typo fixed inside \yii\rest\CreateAction
  Fixed test break.
  Fixed test case.
  note about validation rules order
  Return a fixtures cleanup in case of a failing test
  Update finnish translation
  skip fixture controller test on HHVM
  Make unit tests cleanup a DB after finish
  Fixes #4945: Added `yii\test\ArrayFixture`
  added array fixture class
  minor doc adjustment [skip ci]
  Fixes #4948. Thanks, @johan162
  Fixes #4947
  ...

Conflicts:
	framework/UPGRADE.md

Fix brackets

There were too many brackets.

Rename `\yii\web\User` component param for consistency

Html::button() type is `button` by default

[skip ci] Fix bug in Estonian translation

Typo fixed inside \yii\rest\CreateAction

ensure some features that were recently added to formatter keep working after refactoring

fixes #2268

Update finnish translation

Make unit tests cleanup a DB after finish

* master: (1112 commits)
  Removed unused "use" statements
  Fixed array syntax
  Removed unused "use" statements
  Перевод runtime-handling-errors.md на русский язык
  Mark tests with problematic DBMS as skipped.
  Fixes #3511: Dropped `yii.allowAction()` and modified `yii.confirm()` in `yii.js` to support callbacks
  Update runtime-url-handling.md
  Update runtime-url-handling.md
  Update runtime-url-handling.md
  Update runtime-url-handling.md
  Update runtime-url-handling.md
  Create runtime-url-handling.md
  Fixed test break.
  Fixes #3410: yii.activeForm.js now supports adding/removing fields dynamically
  Fixes #2914: `ActiveForm::fieldConfig` will be merged recursively with the `$options` parameter in `ActiveForm::field()`
  Fixes #4936 [skip ci]
  Reverted/fixed some incorrect changes.
  missing "." sign
  Fixed formatting, initialized options array
  Fixed phpdoc
  ...

Conflicts:
	framework/CHANGELOG.md
	framework/base/Formatter.php
	framework/i18n/Formatter.php
	tests/unit/framework/base/FormatterTest.php
	tests/unit/framework/i18n/FormatterTest.php

neads cleanup