refactor: move all HTTP-Website code into www subdirectory

www/templates/gallery/gallery_overview.html

@@ -0,0 +1,18 @@
+
+{% extends "root.html" %}
+
+{% block extra_head %}
+    <link rel="stylesheet" href="/static/gallerystyle.css">
+{% endblock %}
+
+{% block second_title %}
+<h2> Gallery </h2>
+{% endblock %}
+
+{%block main_content%}
+    <div id="gallery_root_grid">
+        {% for key,value in array_path %}
+           <div class=""
+        {% endfor %}
+    </div>
+{%endblock%}