Adds support for currency display (#277)

* Adds a helper function for rendering currency data

* Update helper functions for StockItem model

* Render purchasePrice correctly for stockitem

* Use currency_formatter library instead of money_formatter

* Add total price display for purchase order

* icon fix

assets/release_notes.md

@@ -4,6 +4,7 @@
 ### 0.10.2 - March 2023
 ---
 
+- Adds support for proper currency rendering
 - Fix icon for supplier part detail widget
 
 ### 0.10.1 - February 2023