Breakout (most) user stuff to separate module

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

users/templates/registration/login.html

@@ -0,0 +1,10 @@
+{% extends 'base_rigs.html' %}
+
+{% block title %}Login{% endblock %}
+
+{% block content %}
+<div class="text-center">
+	<h1>R<small>ig</small> I<small>nformation</small> G<small>athering</small> S<small>ystem</small></h1>
+</div>
+{% include 'registration/loginform.html' %}
+{% endblock %}