fixed auth manager unit test to not expect generic exception

This is not allowed by phpunit as a test may not fail anymore
Merge branch 'master' of github.com:yiisoft/yii2

* 'master' of github.com:yiisoft/yii2: (31 commits)
  Finished bootstrap Widget and Modal.
  PHP Intl extension has been added to default Yii requirements.
  moved optional packages to "suggest", updated platform requirements
  "vendor-dir": "vendor" is default, removed
  Fixes issue #320: Module::createController() will fail with a route with trailing slash.
  Fixed test break about AssetController.
  requirements css.php twitter bootstrap update to 2.3.2
  Twitter bootstrap updated to 2.3.2
  Modified the IAssetConvert interface.
  hashing the key for registerCss and registerJs.
  Update AccessRule.php
  refactored code after feedback
  Fixed framework path.
  Added support for View::POS_READY.
  new proposed structure
  remove from master (update track)
  minor fixes
  updated the README file of the bootstrap app.
  Inflector class
  readjusting files for the framework package.
  ...
Changed Yii.php case in some files where it was wrong
readded accidentally removed .gitignore file