Javascript default language is not the PHP one

[sembrestels]

js/lib/languages.js declares this line:

elgg.config.language = 'en';

Downloaded language (js) when an user have no language definied is 'en', when it should be the site's default one.

[sembrestels]

Replacing the line with this one may solve the problem:

elgg.config.language = "<?php echo elgg_get_config('language'); ?>";

[sembrestels]

Replying to sembrestels:
Better:

elgg.config.language = "<?php echo elgg_get_config('language'); ?>" || 'en';