Breakout (most) user stuff to separate module

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

users/regbackend.py

@@ -0,0 +1,15 @@
+from RIGS.models import Profile
+from users.forms import ProfileRegistrationFormUniqueEmail
+from registration.signals import user_registered
+
+
+def user_created(sender, user, request, **kwargs):
+    form = ProfileRegistrationFormUniqueEmail(request.POST)
+    user.first_name = form.data['first_name']
+    user.last_name = form.data['last_name']
+    user.initials = form.data['initials']
+    # user.phone = form.data['phone']
+    user.save()
+
+
+user_registered.connect(user_created)