[Work in progress] I18n icu

Added intl check to tests, better error reporting, credited Aura.Intl for the most complex test pattern

Removed intl version check since it's very inconsistent and it seems bundled versions are always the same ones for the same PHP versions

Fixes PHP 5.5 weird placeholder replacememt in case no arguments are provided at all (https://bugs.php.net/bug.php?id=65920).

* master: (103 commits)
  fixed broken test after whitespace changes in view
  Removed the extra EOLs.
  I add new line in methods that render code in the head and for body
  GII update button style
  GII create object button style [skip ci]
  Fixes #980: Changed the default way of generating action URLs for ActionColumn.
  View default value for $params
  adjusted cubrid version in schema quote
  removed cubrid env from tavis.yml
  simplified cubrid db install on travis
  fixed cubrid schema test for pdo type
  fixed validator test break
  added cubrid specific pdo type casting
  Updated FileValidator tests
  Better AR connection init in tests
  Removed @codeCoverageIgnore
  no xss for attribute error messages that contain {value}
  Clientvalidation {value} was not what has been validated
  moved getPdoType() to Schema.
  optimized datepick js code.
  ...

Conflicts:
	framework/yii/base/View.php

I have add new line in methods that render code in the head and for body

GII button styles

View. Default empty array value for $params

To prevent Warning "Trying to get property of non-object" in case when nothing set to params, but you try to get some key (check is there something)

ArrayHelper::getValue($this->view->params, 'abc');

cubrid pdo does not support PARAM_BOOL so we cast the value to integer
and store 0 and 1 instead

fixes #964

Conflicts:
	framework/yii/validators/RegularExpressionValidator.php

also fixed some inconsistency between client and server validation.