Add a download box to the lab page. Also more accurate explanation re lack of Java dependency

i2p2www/pages/downloads/lab.html

@@ -1,4 +1,5 @@
 {% extends "global/layout.html" %}
+{%- from "downloads/macros" import package_outer with context -%}
 {% block title %}I2P Lab{% endblock %}
 {% block content %}
 <h1>{{ _('I2P Laboratory') }}</h1>
@@ -15,14 +16,35 @@ We welcome your feedback at the <a href="{{ forum }}">I2P Forum</a>
 <h3>{{ _('Current Projects') }}</h3>
 
 <h5>{{ _('Zero-Dependency installer') }}</h5>
-{% trans installer='https://download.i2p2.de/experimental/Zero-Installer-0.9.38.exe' %}
 <p>
-This is an I2P installer for Windows that does not depend on Java.  It comes with everything it needs out of the box.
-</p>
-<p>
-<a href="{{ installer }}">Download the installer</a> and double-click on it.
-</p>
+{% trans %}
+This is an I2P installer for Windows that does not depend on existing Java installation .  It comes with everything it needs out of the box.
 {%- endtrans %}
+</p>
+{% trans %}
+Status: Proof-Of-Concept
+{%- endtrans %}
+
+{%- set name     = 'Windows' -%}
+{%- set icon     = 'images/download/windows.png' -%}
+{%- set filename = 'Zero-Installer-0.9.38.exe' -%}
+{%- set hash     = '113cc899939e918cbdbd6f06efd33479d3623b02ab5e26acd360144b44c08601' -%}
+{% call package_outer('windows', name, icon) %}
+<div class = "file">
+	<a class = "default" href="https://download.i2p2.de/experimental/Zero-Installer-0.9.38.exe">
+		<span class = "name">{{ filename }}</span>
+	</a>
+</div>
+<div class = "meta">
+	<div class = "hash">
+		<code>{{ hash }}</code>
+	</div>
+</div>
+<p>{% trans -%}
+Download that file and run it.
+{%- endtrans %}</p>
+{% endcall %}
+
 <!--
 {% trans signer='zlatinb',
 signingkey=url_for('static', filename='zlatinb.key.crt') -%}