Masonry - imagesLoaded - Not a function

Masonry and imagesLoaded should be loaded and work correctly. A similar site has been made, and there it works correctly. I have no idea where my problem is, so I am hoping that you maybe see the problem. There should be something missing.

In Chrome Inspect I get the following error:

Uncaught TypeError: $(...).imagesLoaded is not a function

By what I have understood this means that .imagesLoaded and Masonry should be correctly loaded? Else I would have recieved the error $container.imagesLoaded is not a function ?

What I have tried

Checking if jquery-2.1.4.min.js is properly loaded
Changing the order of when the jquery is loaded
Searching online
Searching for errors within the jquery

Header

<script src="http://www.vekvemedia.no/wp-content/themes/vekvemedia/js/jquery-2.1.4.min.js"></script>
<script src="http://www.vekvemedia.no/wp-content/themes/vekvemedia/js/collection.js"></script>
<?php wp_head(); ?>

HTML

<div class="container">
    <div id="masonry-container" class="row nomargin">
         <div class="col-md-9">
              <div class="item col-lg-4 col-md-4 col-sm-4">
                   <!--- Content --->
              </div>
              <div class="item col-lg-4 col-md-4 col-sm-4">
                   <!--- Content --->
              </div>
              <div class="item col-lg-4 col-md-4 col-sm-4">
                   <!--- Content --->
              </div>
         </div>
         <div class="item col-lg-3 col-md-4 col-sm-3 col-xs-12">
              <!--- Content --->
         </div>
    </div>
</div>

Footer

<script src="http://www.vekvemedia.no/wp-content/themes/vekvemedia/js/masonry.pkgd.min.js"></script>
<script src="http://www.vekvemedia.no/wp-content/themes/vekvemedia/js/imagesloaded.js"></script>

<script>
  $('#masonry-container').imagesLoaded( function(){
    $('#masonry-container').masonry({
     itemSelector: '.item',
     isAnimated: true,
     isFitWidth: true
    });
  });
$(window).resize(function() {
    $('#masonry-container').masonry({
        itemSelector: '.item',
        isAnimated: true
    }, 'reload');
});
</script>

The page can be found here.

A similar page where it works

It seems that you have a Javascript conflict. To solve this issue you can putting jQuery Into No-Conflict Mode. Check out the jQuery noConflict function.

So try this :

jQuery.noConflict();
jQuery( document ).ready(function( $ ) {
 $('#masonry-container').imagesLoaded( function(){
    $('#masonry-container').masonry({
        itemSelector: '.item',
        isAnimated: true,
        isFitWidth: true
    });
 });

 $(window).resize(function() {
    $('#masonry-container').masonry({
        itemSelector: '.item',
        isAnimated: true
    }, 'reload');
 });
});