ensure new users get a default collection on signup and any missing users get them too

app/__init__.py

@@ -162,6 +162,13 @@ def clear_api_limits():
         for l in limits:
             l.delete()
 
+def ensure_default_collection():
+    from .db import db
+    from .models import BookmarkCollections
+    with db.transaction():
+        for missing_user in BookmarkCollections.get_users_without_default():
+            BookmarkCollections.create_default(missing_user)
+
 cache = Cache()
 
 def create_app():
@@ -243,6 +250,8 @@ def create_app():
 
         reparse_babycode()
 
+        ensure_default_collection()
+
         bind_default_badges(app.config['BADGES_PATH'])
 
     app.config['SESSION_COOKIE_SECURE'] = True