Twenty Eleven Theme "Read More" Link not shown

Hey guys,

first of all I have to say that I’m absolutely new to WP and I just know basic HTML stuff and almost nothing about PHP. So I’m a complete newbie.

I’m currently running WP-Version 3.1 on my new blog an I use the Twenty-Eleven Theme as it fits my needs almost perfectly. There are just a few things that i want to customize. After some Google-research I found out how to make the theme show excerpts on all kinds of pages e.g. when showing search results or archive posts.
But what it doesn’t do is showing a “Read on” link an I don’t know why.
Is there something I can do to get it working?

As far as I know it must be something in the functions.php file which currently looks like this (i guess thats the part about the “Read on” link stuff):

/**
 * Returns a "Continue Reading" link for excerpts
 */
function twentyeleven_continue_reading_link() {
    return ' <a href="'. esc_url( get_permalink() ) . '">' . __( 'noch mehr <span class="meta-nav">→</span>', 'twentyeleven' ) . '</a>';
} 

/**
 * Replaces "[...]" (appended to automatically generated excerpts) with an ellipsis and twentyeleven_continue_reading_link().
 *
 * To override this in a child theme, remove the filter and add your own
 * function tied to the excerpt_more filter hook.
 */
function twentyeleven_auto_excerpt_more( $more ) {
    return ' …' . twentyeleven_continue_reading_link();
}
add_filter( 'excerpt_more', 'twentyeleven_auto_excerpt_more' ); 

/**
 * Adds a pretty "Continue Reading" link to custom post excerpts.
 *
 * To override this link in a child theme, remove the filter and add your own
 * function tied to the get_the_excerpt filter hook.
 */
function twentyeleven_custom_excerpt_more( $output ) {
    if ( has_excerpt() && ! is_attachment() ) {
        $output .= twentyeleven_continue_reading_link();
    }
    return $output;
}
add_filter( 'get_the_excerpt', 'twentyeleven_custom_excerpt_more' );

The address of the page is bavarian-observer.de

Would be great if one of you guys knows what to do.
Oh and since I’m german I would like the theme to show not “Read on” but “Noch mehr” instead.

Thanks four your help.