Breakout (most) user stuff to separate module

The model remains in RIGS for now, as it's pretty painful to move...

templates/registration/activation_complete.html

@@ -1,10 +0,0 @@
-{% extends 'base_rigs.html' %}
-
-{% block title %}Activation Complete{% endblock %}
-
-{% block content %}
-<div class="alert alert-success">
-	<h2>Activation Complete</h2>
-	<p>Your user account is now awaiting administrator approval. Won't be long!</p>
-</div>
-{% endblock %}