Don't see Appearance / Menu option…

Hello,
This is my site.. sveznalica.org

In Appearance i only have
Themes
Customize
Edit

This is my function.php

[ Moderator note: please wrap code in backticks or use the code button. ]

<?php
//Thumbnails
add_theme_support('post-thumbnails');

// Menu
function register_my_menus() {
  register_nav_menus(
    array(
      'header-menu' => __( 'Header Menu' ),
      'extra-menu' => __( 'Extra Menu' )
    )
  );
}
add_action( 'init', 'register_my_menus' );

add_theme_support( 'custom-background' );

function wpb_widgets_init() {

	    register_sidebar( array(
	        'name' => __( 'Main Sidebar', 'wpb' ),
	        'id' => 'sidebar-1',
	        'description' => __( 'The main sidebar appears on the right on each page except the front page template', 'wpb' ),
	        'before_widget' => '<aside id="%1$s" class="widget %2$s">',
	        'after_widget' => '</aside>',
	        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
	    ) );

	    register_sidebar( array(
	        'name' =>__( 'Front page sidebar', 'wpb'),
	        'id' => 'sidebar-2',
	        'description' => __( 'Appears on the static front page template', 'wpb' ),
	        'before_widget' => '<aside id="%1$s" class="widget %2$s">',
	        'after_widget' => '</aside>',
	        'before_title' => '<h3 class="widget-title">',
	        'after_title' => '</h3>',
	    ) );
	    }
	add_action( 'widgets_init', 'wpb_widgets_init' );
?>