Auth manager init version
Moved to framework/rbac + method names refactoring
Application::getAuthManager() comment fix
DbManager added + other classes comments fixes
allow unit tests to requireApp() on setUp()
mod: don't create app in bootstrap script, unit tests do it themselves
add: option to destroy app after each test to find unit tests that fail
     to require an app
add: new key for unit tests config named "className". Allows to run the tests
     using different Application instances (consoleApp/ webApp)
mod: TestCase::getParam accepts second param $default=null
mod: incorporate suggestions
- rename requireApp() to mockApplication()
- always destroy app on tearDown()
  - eliminates need for constant YII_DESTROY_APP_ON_TEARDOWN
  - mockApplication() becomes a lot easier. Destroying app on each tearDown
    means creating it on every call is fine. No more checking if it already
    exists and if it has been created from the same config.
- \yii::$app should have been \Yii::$app
Comment fixes + class descriptions added
Comment fixes
PhpManager::saveToFile() LOCK_EX added
Exception types corrected
New condition hash format used where its possible
Remove IManager interface
Merge branch 'master' of https://github.com/yiisoft/yii2 into auth-manager
Moved from framework to yii
set application timezone early in application constructor, set default of UTC if no timezone is configured at all (not in app config nor in php.ini)
Merge commit '1ccce' into fix-209-default-timezone
undo commit 1ccce67f345ca33441fe22602e11cc62a31db371
Unit tests