informatik1
You're right, this template supports to show the page heading in category blog page only. To have it appears the same on single article page, you copy this file:
[ROOT]/plugins/system/t3/base-bs3/html/com_content/article/default.php
Paste it to this directory:
[ROOT]/templates/newstream2/html/com_content/article/ (this directory may not exist, just create these folders)
Then open the new file: [ROOT]/templates/newstream2/html/com_content/article/default.php
You will see this h1 tag:
<h1> <?php echo $this->escape($this->params->get('page_heading')); ?> </h1>
change it to:
<h1 class="page-title"> <?php echo $this->escape($this->params->get('page_heading')); ?> </h1>
Regards