[FIX] Issue with invoices and estimates saving when adding products from scratch.
[FIX] Issue with invoice numbers generating a number that had already existed.
[FIX] Issue where PO's would not auto-generate when estimates were approved.

[NEW] Import products capability
[NEW] Canadian tax brackets added to projects
[NEW] Pserformance upgrades to various modules.

[STATUS] Finishing off WIP (currently in QA)
[STATUS] Phase 2 canadian tax brackets - adding to products, and invoices/estimates.
[STATUS] Phase 2 inv and est.: Edit/view singular screen + approvals in edit mode estimate.