Mixed content Warnings because of get_settings('home')

The file header.inc.php is using get_settings(‘home’) on line 16.
As you can read in the next post this is incorrect ans should be:
get_option(‘home’);
WP Forum post

But as we are using the frontend over http but the Admin over SSL it will cause mixed content warnings as it will output the URL as http.

Using: <?php echo includes_url(); ?>js/tinymce/tiny_mce_popup.js
Will solve the issue of not being able to insert the Product link as it will solve the mixed content warning.

And also using admin_url(); on line 42 will solve the mixed content warning for the styles.

https://wordpress.org/plugins/bolcom-partnerprogramma-wordpress-plugin/