Added placeholder I2PCon pages

i2p2www/pages/site/about/i2pcon/2015.html

@@ -0,0 +1,5 @@
+{% extends "global/layout.html" %}
+{% block title %}I2PCon 2015{% endblock %}
+{% block content %}
+
+{% endblock %}

i2p2www/pages/site/about/i2pcon/index.html

@@ -0,0 +1,12 @@
+{% extends "global/layout.html" %}
+{% block title %}I2PCon{% endblock %}
+{% block content %}
+<p>{% trans -%}
+I2PCon is...
+{%- endtrans %}</p>
+
+<h2>{{ _('Past years') }}</h2>
+<ul>
+<li><a href="{{ site_url('about/i2pcon/2015') }}">2015</a>
+</ul>
+{% endblock %}