Feature: Settings database table added to store string based settings.
It is right now used to store bill header and footer.
Hard Coded header/footer removed from file.
Feature: Tax Analysis form created to easily show the tax calculation.
Feature: Management form uses background workers. Dont' know if it is functional though.
Chore: Reorder Table form moved to masters from sales folder.
Refactor: ManagementBI and SalesAnalysisBI
