BS Tools

- Added a help entry on stocktaking report pages: keep 0 for SKUs not in stock, and notify the company if an input row is missing.
- Damage Count now keeps a draft, so entries are restored if the app is reclaimed while taking a photo.
- Leaving a stocktaking report page with unsubmitted entries now asks for confirmation.
- Audit inventory is submitted under the current date; past periods are view-only.
- Added support for the Audit Officer role.