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

@@ -2,23 +2,27 @@ 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
-    default_group, created = Group.objects.get_or_create(name='Default')
-    if created:
-        logger.info("Created default group")
+    try:
+        default_group, created = Group.objects.get_or_create(name='Default')
+        if created:
+            logger.info("Created default group")
 
-    # Add default permissions (view_project, change_project, delete_task, etc.)
-    for permission in ('_project', '_task'):
-        default_group.permissions.add(
-                *list(Permission.objects.filter(codename__endswith=permission))
-            )
-    
-    # Check super user
-    if User.objects.count() == 0:
-        User.objects.create_superuser('admin', 'admin@example.com', 'admin')
-        logger.info("Created superuser")
+        # Add default permissions (view_project, change_project, delete_task, etc.)
+        for permission in ('_project', '_task'):
+            default_group.permissions.add(
+                    *list(Permission.objects.filter(codename__endswith=permission))
+                )
+        
+        # Check super user
+        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.")