[MICROBA-744] Update logos to source from config parameters

Author: Albert (AJ) St. Aubin

edx_credentials_themes/__init__.py

@@ -1 +1 @@
-__version__ = '0.1.39'
+__version__ = '0.1.40'

edx_credentials_themes/templates/edx.org/_header.html

@@ -2,7 +2,7 @@
     <header class="header-app" role="banner">
         <h1 class="header-app-title">
             <a class="logo" href="{{ site.siteconfiguration.lms_url_root }}">
-                {% include 'edx.org/images/edx-logo.svg' %}
+              <img class="logo-img" src="{{site_logo_url}}" alt="{% firstof platform_name site.name%}" />
             </a>
             <span class="sr-only">{% firstof site.name platform_name %}</span>
         </h1>