Update translations from module list

def update_translations(ctx, module_list):
    """ Update translations from module list"""
    if not module_list:
        raise AnthemError(u"You have to provide a list of "
                          "module's name to update the translations")

    for module in module_list:
        ctx.env['ir.module.module'].with_context(overwrite=True).search(
            [('name', '=', module)]).update_translations()