Typo fixes.
Merge pull request #874 from jails/typo/coding-standards

Typo fixes.
Change `action\Request` behavior.
- `$_GET['url']` is no more supported.
- Setted environmement variables are populated in attributes.
- If the option `'globals'` is set to `false`, $_SERVER, $_ENV, $_GET & $_POST are not added to the Request.