More consistent arrangement of base templates.

src/web/templates/evennia_general/tbi.html

@@ -0,0 +1,18 @@
+{% extends "base.html" %}
+
+{% block header_ext %}
+{% endblock %}
+
+{% block sidebar %}
+{% endblock %}
+
+{% block content %}
+<h1 id="alt-layout">To Be Implemented...</h1>
+    <p>
+      This feature has yet to be implemented, but rest assured that it will be!
+      <br />
+      <br />
+      <br />
+      Eventually...
+    </p>
+{% endblock %}