update user repr to include email

pinaxcon/monkey_patch.py

@@ -14,12 +14,20 @@ def process_request(self, request):
 def do_monkey_patch():
     patch_stripe_card_defaults()
     patch_conference_schedule()
+    update_user_representation()
 
     # Remove this function from existence
     global do_monkey_patch
     do_monkey_patch = lambda: None
 
 
+def update_user_representation():
+    def user_repr(user):
+        return '{} ({})'.format(user.email, user.username)
+
+    User.add_to_class("__str__", user_repr)
+
+
 def patch_stripe_card_defaults():
     from pinax.stripe.actions import sources
     from collections import defaultdict