Improve subscription and add it to admin app

subscription/templates/subscription/subscription.html

@@ -0,0 +1,18 @@
+{% extends "core/base.html" %}
+
+{% block title %}
+{% if profile %}
+Edit {{ member.user.get_display_name }}'s subscription
+{% endif %}
+{% endblock %}
+
+{% block content %}
+<h3>Edit subscription</h3>
+{# <p><a href="{% url 'core:user_profile' object.member.user.id %}">Go to profile</a></p> #}
+{# <p>You're editing the subscription of <strong>{{ member.user.get_display_name }}</strong></p>#}
+<form action="" method="post">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <p><input type="submit" value="Save!" /></p>
+</form>
+{% endblock %}