This reverts commit 9d7597d6, reversing
changes made to 6b6390f7.

Result of a discussion with @qiangxue
- there is not global Yii::$app->response anymore, every action has
  dedicated response class
- implementation allows using HMVC pattern now, nested actions do not
  interfer

issue #33
- implemted getScreenSize for linux systems
- tiny adjustments and better naming for console color methods
- color switch in base Controller changed to magic property
- colorized Help command

changed name of ansi switch to --colors
https://github.com/yiisoft/yii2/commit/69cad905dd049be9d9b35d8103cd60591e13c6ae#commitcomment-3168489
issue #33

also naming of formatString -> ansiFormat

added method wrappers in console/Controller

issue #33

Appended newlines to every PHP document that did not have a newline as the last character in the file.

I18N WIP.

Moving cursors, clear page and line, hide/show cursor implementation is
mostly complete. Need to rework color api now.
sources:
http://en.wikipedia.org/wiki/ANSI_escape_code#CSI_codes
https://github.com/pear/Console_Color2/blob/master/Console/Color2.php

Refactored console Application code.