Added support for Terminated Accounts.

1.5

fixed: isActive returns TRUE only if account active.

New features & bug fixes.

1. Added CoA on account refill.
2. Added new cron to update advance paid account's quota.
3. removed local files for Constants & Helpers, updated them to composer.json as dependencies.

Several Bug Fixes

fixed: limited plans counting

plans with limited quota were not counting properly if After Quota is
not allowed.

Strongly Recommended Update

Prior to this, users were not being disconnected on service validity expiration. Strongly Recommended Update.