Refactor work order status: Infer WO status from Task status
Add panel to list closed, non paid workorders (Incomplete)
Add external projects related to invoicing
Add menues for invoicing system settings
Simplify code, use external libraries | Fix bug
Remove duplicated menu entry
Fix imports | Add code documentation for getWorkOrderStatus | Add test method to generate invoices from work orders
Add SwingX library
Add menues text
Add sellCondition field to payments to make them compatible with invoice payments | Check and fix client missing data before starting the register process
Add move hibernate y c3p0 files into project, use external .properties for specific config
Merge branch 'master' into add_invoicing_module
Avoid disabling the button for payment register and check if an order is paid before allowing further payments