started working on cron job task

capsulflask/schema_migrations/02_up_accounts_vms_etc.sql

@@ -2,6 +2,7 @@
 
 CREATE TABLE accounts (
   email TEXT PRIMARY KEY NOT NULL,
+  account_balance_warning TEXT NULL,
   created  TIMESTAMP NOT NULL DEFAULT NOW()
 );
 
@@ -72,13 +73,14 @@ CREATE TABLE payment_sessions (
   dollars    NUMERIC(8, 2) NOT NULL
 );
 
-CREATE TABLE unconfirmed_btcpay_invoices (
+CREATE TABLE unresolved_btcpay_invoices (
   id         TEXT PRIMARY KEY,
   email      TEXT REFERENCES accounts(email) ON DELETE RESTRICT,
   payment_id INTEGER NOT NULL,
   FOREIGN KEY (email, payment_id) REFERENCES payments(email, id) ON DELETE CASCADE
 );
 
+
 INSERT INTO os_images (id, template_image_file_name, description)
 VALUES  ('alpine311', 'alpine-cloud-2020-04-18.qcow2', 'Alpine Linux 3.11'),
         ('ubuntu18', 'ubuntu-18.04-minimal-cloudimg-amd64.img', 'Ubuntu 18.04 LTS (Bionic)'),