Reimplement compose and add tiling windows

core/templates/partials/compose-message-rows.html

@@ -0,0 +1,7 @@
+{% if message_rows %}
+  {% for msg in message_rows %}
+    {% include "partials/compose-message-row.html" with msg=msg only %}
+  {% endfor %}
+{% elif show_empty_state %}
+  <p class="compose-empty">{{ empty_message|default:"No stored messages for this contact yet." }}</p>
+{% endif %}