You can modify the date format in file framework/functions/post-functions.php inside the function
function mo_entry_published
All possible formats are available in the link below –
http://codex.wordpress.org/Formatting_Date_and_Time
And you can find the shortcode in framework/shortcodes/posts-shortcodes.php ..
For translation:
You can learn from http://www.solostream.com/blog/tutorials/translate-wordpress-theme/ about translating your site into your language. Pls make sure you add the entry for your language into wp-config.php file like this –
define (‘WPLANG’, ‘fr_FR’);
Pls use the pot files in ‘extinct/languages’ folder as a template to create .po files.http://www.poedit.net/ -Poedit is the popular free editor for creating .po and the corresponding binary .mo files.
You may need to do an update in POEdit to see all the strings.
Check the Codex page to give your file the right name:
https://make.wordpress.org/polyglots/teams/