Give existing users all folder permissions

This will be done just before we turn on folder permissions
to all services to ensure that all users start with all the
permissions.

migrations/versions/0292_give_users_folder_perms.py

@@ -0,0 +1,26 @@
+"""
+
+Revision ID: 0292_give_users_folder_perms
+Revises: 0291_remove_unused_index
+Create Date: 2019-04-01 16:36:53.274394
+
+"""
+from alembic import op
+from sqlalchemy.sql import text
+
+
+revision = '0292_give_users_folder_perms'
+down_revision = '0291_remove_unused_index'
+
+
+def upgrade():
+    op.execute(text(
+        """INSERT INTO user_folder_permissions (user_id, template_folder_id, service_id)
+        SELECT user_to_service.user_id, template_folder.id, user_to_service.service_id from user_to_service, template_folder
+        WHERE template_folder.service_id = user_to_service.service_id
+        ON CONFLICT do nothing"""
+    ))
+
+
+def downgrade():
+    pass