Language e log erro

Good morning, I'm new to the use of owncloud and I would like to get help in the initial colors of the Brazilian system, more than in the time of the beginning of the session to initialize in Brazilian Brazil, it does not rise.

Settings added to my config.php

'files_external_allow_create_new_local' => 'true',
'enable_avatars' => false,
'log_type' => 'owncloud',
'logfile' => '/media/Datas/log/owncloud.log',
'loglevel' => 3,
'logdateformat' => 'F d, Y H: i: s',
'logtimezone' => 'America / Sao_Paulo',
'default_language' => 'pt_BR',

I would also like someone to explain to me if the enterprise mode is the benefits and values to keep it after