functions.php

<?php

function infnv_wp_trim_excerpt($text) {
    $raw_excerpt = $text;
    if ( '' == $text ) {
        $text = get_the_content('');

        $text = strip_shortcodes( $text );

        $text = apply_filters('the_content', $text);
        $text = str_replace(']]>', ']]>', $text);
        $text = strip_tags($text, '<a>');
        $excerpt_length = apply_filters('excerpt_length', 55);

        $excerpt_more = apply_filters('excerpt_more', ' ' . '[...]');
        $words = preg_split('/(<a.*?a>)|\n|\r|\t|\s/', $text, $excerpt_length + 1, PREG_SPLIT_NO_EMPTY|PREG_SPLIT_DELIM_CAPTURE );
        if ( count($words) > $excerpt_length ) {
            array_pop($words);
            $text = implode(' ', $words);
            $text = $text . $excerpt_more;
        } else {
            $text = implode(' ', $words);
        }
    }
    return apply_filters('new_wp_trim_excerpt', $text, $raw_excerpt);

}

remove_filter('get_the_excerpt', 'wp_trim_excerpt');
add_filter('get_the_excerpt', 'infnv_wp_trim_excerpt');

function infnv_action_wp_head() {
	echo '<link rel="shortcut icon" href="' . get_stylesheet_directory_uri() . '/images/favicon.png" />';
}
add_action( 'wp_head', 'infnv_action_wp_head' );