some cleanup, add skeleton of zola based website

site/templates/index.html

@@ -0,0 +1,14 @@
+{% extends "juice/templates/index.html" %}
+{% block hero %}
+    <div>
+        <section>
+            <h1 class="text-center heading-text">A WebAssembly based sizecoding platform</h1>
+        </section>
+        <a href="v0.1pre1">
+            <div class="demonstration-gif" style="width:640px;height:512px;background-color:black"></div>
+        </a>
+    </div>
+{% endblock hero %}
+
+{% block footer %}
+{% endblock footer %}