Upgrade to 5.1 EB concerns

HI I have modified these files in EB 5:

/components/com_easyblog/themes/wireframe/composer/blocks/handlers/file/preview.php

/modules/mod_eaysblogshowcase/tmpl/default.php

What will happen to these when I upgrade to 5.1? Can I make the same changes that I did before??? See below

/modules/mod_eaysblogshowcase/tmpl/default.php

<?php
/**
* @package EasyBlog
* @copyright Copyright (C) 2010 - 2015 Stack Ideas Sdn Bhd. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* EasyBlog is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
defined('_JEXEC') or die('Unauthorized Access');
?>

<?php if ($config->get('main_ratings')) { ?>
<script type="text/javascript">
EasyBlog.require()
.script('ratings')
.done(function($) {
$('#fd.mod-easyblogshowcase [data-rating-form]').implement(EasyBlog.Controller.Ratings);
});

</script>
<?php } ?>

<div id="fd" class="eb eb-mod st-1 eb-responsive mod-easyblogshowcase<?php echo $params->get('moduleclass_sfx'); ?>">
<div class="eb-gallery" data-autoplay="<?php echo $autoplay;?>" data-interval="<?php echo $autoplayInterval;?>">
<div class="eb-gallery-stage">
<div class="eb-gallery-viewport">
<?php foreach ($posts as $post) { ?><div class="eb-gallery-item"> <!--PLEASE KEEP THIS DOM THIS WAY TO REMOVE WHITESPACING-->

<span class="hidden-phone"><font size="6">
<a href="<?php echo $post->getPermalink();?>"><?php echo substr($post->title,0,40).'...'?></a>
</font></span>

<span class="visible-phone"><font size="6">

<a href="<?php echo $post->getPermalink();?>"><?php echo substr($post->title,0,22).'...'?></a>
</font></span>




<div class="eb-gallery-box">
<?php if ($params->get('photo_show', true)) { ?>
<?php if ($post->postCover) { ?>
<div class="eb-gallery-thumb eb-mod-thumb is-<?php echo $post->postCoverLayout->alignment; ?>">
<?php if (isset($post->postCoverLayout->layout->crop) && $post->postCoverLayout->layout->crop) { ?>
<a href="<?php echo $post->getPermalink();?>" class="eb-mod-image-cover"
style="
background-image: url('<?php echo $post->postCover;?>') !important;
width: <?php echo $post->postCoverLayout->layout->width;?>px;
height: <?php echo $post->postCoverLayout->layout->height;?>px;"
></a>
<?php } else { ?>
<a href="<?php echo $post->getPermalink();?>" class="eb-mod-image"
style="width:<?php echo $post->postCoverLayout->layout->width;?>px;">
<img src="<?php echo $post->postCover;?>" alt="<?php echo $post->title;?>" />
</a>
<?php } ?>
</div>
<?php } ?>
<?php } ?>

<div class="clearfix"></div>
<div class="eb-gallery-body">
<?php if ($params->get('authoravatar', true)) { ?>
<a href="<?php echo $post->getAuthor()->getProfileLink(); ?>" class="eb-gallery-avatar mod-avatar">
<img src="<?php echo $post->getAuthor()->getAvatar(); ?>" width="50" height="50" />
</a>
<?php } ?>



<div class="eb-gallery-meta">
<?php if ($params->get('contentauthor', true)) { ?>
<span>
<a href="<?php echo $post->getAuthor()->getProfileLink(); ?>" class="eb-mod-media-title"><?php echo $post->getAuthor()->getName(); ?></a>
</span>
<?php } ?>



<?php if ($params->get('contentdate' , true)) { ?>
<span>
<?php echo $post->getCreationDate()->format($params->get('dateformat', JText::_('DATE_FORMAT_LC3'))); ?>
</span>
<?php } ?>
</div>

<div class="eb-gallery-content">
<?php echo $post->content; ?>
</div>

<?php if ($params->get('showratings', true)) { ?>
<div class="eb-rating">
<?php echo EB::ratings()->html($post, 'ebmostshowcase-' . $post->id . '-ratings', JText::_('MOD_SHOWCASE_RATE_BLOG_ENTRY'), $disabled); ?>
</div>
<?php } ?>

<?php if ($params->get('showreadmore', true)) { ?>
<div class="eb-gallery-more">
<a href="<?php echo $post->getPermalink();?>"><?php echo JText::_('MOD_SHOWCASE_READ_MORE');?></a>
</div>
<?php } ?>
</div>
</div>
</div><?php } ?> <!--PLEASE KEEP THIS DOM THIS WAY TO REMOVE WHITESPACING-->
</div>

<?php if (count($posts) > 1) { ?>
<div class="eb-gallery-buttons">
<div class="eb-gallery-button eb-gallery-prev-button">
<i class="fa fa-angle-left"></i>
</div>
<div class="eb-gallery-button eb-gallery-next-button">
<i class="fa fa-angle-right"></i>
</div>
</div>
<?php } ?>
</div>
<div class="eb-gallery-menu hidden">
<?php $i = 0; ?>
<?php foreach ($posts as $post) { ?>
<div class="eb-gallery-menu-item <?php echo $i == 0 ? 'active' : '';?>"></div>
<?php $i++;?>
<?php } ?>
</div>
</div>
</div>




*********************************END***********************

/components/com_easyblog/themes/wireframe/composer/blocks/handlers/file/preview.php


<?php
/**
* @package EasyBlog
* @copyright Copyright (C) 2010 - 2015 Stack Ideas Sdn Bhd. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* EasyBlog is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
defined('_JEXEC') or die('Unauthorized Access');
?>

<div class="col-cell eb-file-details">

<font size="4"><B><a href="" target="_blank" data-file-url><i class="fa fa-file-text"></i></B><span data-file-name></span></a></font>

</div>