* 'master' of github.com:yiisoft/yii2: (87 commits)
  Added dirty attribute description.
  Fixed doc about renderers.
  Finished the initial draft of upgrading instructions
  Fix attaching behavior via config
  Changed default value of View::renderers.
  Fix attaching behavior via config
  Menu WIP
  upgrading instructions WIP
  Refactored Breadcrumbs.
  Fixes issue #54: Implemented Breadcrumbs.
  Added Breadcrumbs.php
  Fixes issue #134
  Rollback word consistencty over entire codebase (ref. #139).
  Add ensureBehaviors() to detachBehavior*()
  Fixes issue #124.
  code reorganization fix.
  reorganized app code. removed app template from framework folder.
  Fixes issue #128.
  Fixes issue #124.
  Add Newlines
  ...

Conflicts:
	tests/unit/framework/caching/ApcCacheTest.php