* master: (613 commits)
  fixed typo
  Fixes #1222: refactored jui/Widget, intorduced jui/Slider and jui/SliderInput
  Correct Nav.php comments/PHP doc to reflect BS3 dropdown support.
  Correct Nav.php comments/PHP doc to reflect BS3 dropdown support.
  Correct Nav.php comments/PHP doc to reflect BS3 dropdown support.
  Added example for dividers to bootstrap Nav
  Checkboxlist documentation fix
  Added "Using controller action to render errors"
  Fix doc
  Renamed DetailView attribute type to format
  encode email in Formatter
  Added default status code setting.
  "yii\swiftmailer\Mailer" transport setup has been advanced to support constructor arguments and plugins.
  fix rbac select statement
  Comments cleanup.
  Reverted closeButton
  Nomenclature and code realignment.
  better nginx config
  guide about using bootstrap less files
  Include Schema in new migrations by default
  ...

Conflicts:
	framework/yii/db/ActiveRecord.php
	framework/yii/db/ActiveRelation.php
	tests/unit/data/config.php