enhance Inflector  helper with ascii function
updated transliteration (greek + russian + german + ukrainian) and removed dependency on ascii function
Merge branch 'upstream' into 364-toAscii

* upstream:
  Fixed build break.
  Fixes issue #194: Added Application::catchAll.
  added missing default to getValue in boostrap tabs
  \yii\widgets\Menu improvement
  Fixes issue #467: allow view file to be absent as long as the themed version exists.
  better auto scrolling.
  Fixes issue #446: automatically scroll to first error.
fix functionality, keep each function to do what it supposed to do
fix test
Merge remote-tracking branch 'upstream/master' into 364-toAscii

* upstream/master: (91 commits)
  fixed init.bat paths
  renamed backstage → backend
  Fixed test break.
  Response WIP
  coding style fix.
  [1] Redone missing code. [2] Added empty line at the end of file [3] Removed exception.
  Updated code style. braces on the same line for control statements.
  Removed unused columsn from find constraint sql. Fixed typo. Added extra schema check for when a foreign table is not in the same schema. Updated indentation to conform to other classes.
  Multilevel Items
  Fixes issue #514.
  Removed the config setting that should not have been commited.
  Removed false exception catching.
  Removed custom pgsql PDO and added defaultSchema as public property.
  CS fixes.
  Minor refactoring of DbMessageSource.
  Response WIP
  Minor refactoring of t().
  Added Jsonable support.
  Fixes #13. Implement DB message source.
  Yii::t() minor fix.
  ...
add old yii-ext twig renderer's function into this. and as per yii2's view system changed so for now add simple directory of file based file loader for twig
add old yii-ext twig renderer's function into this. and as per yii2's view system changed so for now add simple directory of file based file loader for twig
minor typos
The signature for `yii\gridview\ActionColumn::urlCreator` is changed - the `$action` parameter is moved to the first
parameter adjustment.
Changed the signature of `urlCreator` and button creators for `yii\gridview\ActionColumn`
doc fix.
Merge branch 'upstream' into 364-toAscii

* upstream: (2012 commits)
  doc fix.
  Changed the signature of `urlCreator` and button creators for `yii\gridview\ActionColumn`
  parameter adjustment.
  The signature for `yii\gridview\ActionColumn::urlCreator` is changed - the `$action` parameter is moved to the first
  Fixed the signature of Schema::findUniqueIndexes().
  reverted #1598 and added a test for it
  Fix wrong array index in unique indexes for MySql
  Making accesors public
  Get DB unique indexes information
  Fixes #1610: `Html::activeCheckboxList()` and `Html::activeRadioList()` will submit an empty string if no checkbox/radio is selected
  Gii should keep horizontal layout
  Documentation at "yii\authclient" updated.
  Doc comments at "yii\authclient" updated.
  Auth clients "Choice" doc comments updated.
  Auth clients "Choice" widget javascript advanced.
  Bootstrap's dropdown encodes also trailing caret tag
  Auth clients "Choice" widget markup updated.
  Gii should keep horizontal layout
  extended from codeception testcase, added docs
  Auth clients for Facebook, GitHub, LinkedIn added.
  ...

Conflicts:
	framework/yii/helpers/BaseInflector.php
	tests/unit/framework/helpers/InflectorTest.php
Fixes #1638: prevent table names from being enclosed within curly brackets twice.
Number validator was missing
Merge pull request #1639 from docsolver/patch-1

Number validator was missing
Fixes #1611: Added `BaseActiveRecord::markAttributeDirty()`
Mongo README.md updated.
Fixed #1504: Debug toolbar isn't loaded successfully in some environments when xdebug is enabled