<!-- #main-navigation --> 
<div id="main-navigation" class="clearfix">
    <div class="container">

        <!-- #main-navigation-inside -->
        <div id="main-navigation-inside" class="clearfix">
            <div class="row">
                <div class="col-md-12">
                    <nav role="navigation">
                        <?php if ($page['navigation']) :?>
                        <?php print drupal_render($page['navigation']); ?>
                        <?php else : ?>

                        <?php print theme('links__system_main_menu', array('links' => $main_menu, 'attributes' => array('class' => array('main-menu', 'menu'), ), 'heading' => array('text' => t('Main menu'), 'level' => 'h2', 'class' => array('element-invisible'), ), )); ?>

                        <?php endif; ?>
                    </nav>
                </div>
            </div>
        </div>
        <!-- EOF: #main-navigation-inside -->

    </div>
</div>
<!-- EOF: #main-navigation -->