Better symfony integration changes.  Still some issues but getting closer.

Fixed:
- xip.io magically started working
- Timezone support added to php script
- host ip added to app_dev and config

Issues:
- host ip is not idempotent (multiple calls to provision append the ip each time)
- nginx didn't add the vagrant site last time (recent error)
- Seeing an error on app_dev (An error occurred while loading the web debug toolbar (404: Not Found).)