Add Closures to ERP / Automated windows packaging

This patch adds the closures division to the main ERP.

Another new feature is a packaging dir for automated windows
builds + installer creation in a cross compiled environment.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Create Dedicated SettingsManager

Currently, the settings are stored in a binary file. This change
moves them to QSettings, and also adds a dialog to set database
parameters before login.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Closures Integration ongoing

Working on fully integrating the closures division to the main
erp

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>