Reverted sleep to 30, caught boot code that cannot run during migration

.travis.yml

@@ -18,6 +18,6 @@ before_install:
 
 install:
   - docker-compose up --build -d
-  - sleep 60
+  - sleep 30
 
 script: docker-compose exec webapp python manage.py test

app/boot.py

@@ -2,12 +2,14 @@ def boot():
     from django.contrib.contenttypes.models import ContentType
     from django.contrib.auth.models import Permission
     from django.contrib.auth.models import User, Group
+    from django.db.utils import ProgrammingError
     from . import signals
     import logging
 
     logger = logging.getLogger('app.logger')
 
     # Check default group
+    try:
         default_group, created = Group.objects.get_or_create(name='Default')
         if created:
             logger.info("Created default group")
@@ -22,3 +24,5 @@ def boot():
         if User.objects.count() == 0:
             User.objects.create_superuser('admin', 'admin@example.com', 'admin')
             logger.info("Created superuser")
+    except ProgrammingError:
+        logger.warn("Could not create default group/user. If running a migration, this is expected.")