Add non-encoded string support to encodable fields.
Remove non-static method calls.
Move `CommonAppController::flash()` to `CommonAppController::alert()`.
Fix missing alert element plugin name.
Add `CommonEventManager::listPlugins()`.

In certain tests, it is imperative that no other plugins are loaded
so they don't modify the expected implemented listeners. By isolating
the `CakePlugin::loaded()`, it is now possible to mock it and make
it return an empty array to skip all plugins listeners auto-loading.
Fix E_STRICT errors.
Update tests.
Fix language configuration key.
Throw an error when owner field is missing.
Add missing `CakeTime`.
Add `Navigation::$_items` overwrite.
I18n string URLs starting with `/`.
Fix recursive array intersection.
Bump version to 0.2.0.
Merge branch 'release/0.2.0'