Configuration: php settings moved to local config file

Notes:
- The timezone option has been simply moved.
- The disabled `zlib.output_compression` **yes** has been changed to enabled and probably safer **no** and has been moved too.
- It would be also cool to add information about php configuring to the http://doc.nette.org/cs/configuring page. Currently only in **Session** section is mentioned the ability to configure php with a link to the PHP site. The directives set in the **sandbox** should be mentioned on that page.