verify that the model provided to the Form Auth adapter exists prior to attempted use
Merge pull request #846 from pixelcog/check-auth-model

Verify model provided to the Form Auth adapter exists prior to attempted use
Merge pull request #848 from jails/bug/tests

Fix failing tests caused by the test API changes.
Merge pull request #849 from jails/bug/tests

Fix a difference beetween UI and console testing.
fix misnamed write method parameter in logger output adapters
Merge pull request #850 from pixelcog/logger-priority-var

Fix misnamed 'priority' parameter in Logger adapter write methods
Change `action\Request` behavior.
- `$_GET['url']` is no more supported.
- `action\Request` instance are now initialized using env globals if the option : `['globals' => false]` is not set.
  this mean `$request->env('HTTP_HOST')` is now directly accessible via `$request->http` for example.