Release of minor versions of Abacre Point of Sale products

Released:

Abacre Restaurant Point of Sale v8.9
Abacre Retail Point of Sale v7.9
Abacre Hotel Management System v5.9
Abacre Cash Register v4.9
Abacre Inventory Management and Control v4.9

The list of changes:

* Feature: added a possibility to do simple backups. Use menu Help – Backup. It will create a backup file with your database and configuration files and open backup folder after that.
* Improvement: to prevent occasional license deactivation the following confirmation dialog is shown: Are you should you want to deactivate the license?
* Improvement: added removing unneeded spaces and tabs from a registration key when doing software registration.