TIF: Add a content rating system for Brazil

- Add Brazil TV content ratings
- Remove Italy TV content rating since it doesn't have the official one.

References:
http://en.wikipedia.org/wiki/Brazilian_Advisory_Rating_System
http://portal.mj.gov.br/services/DocumentManagement/FileDownload.EZTSvc.asp?DocumentID=%7B25A80220-B0E3-47FD-923F-246B6184C3C6%7D&ServiceInstUID=%7B59D015FA-30D3-48EE-B124-02A314CB7999%7D

Change-Id: Ibed9b4be0871b50b9dcd95be3a015f5a1e58676d