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

lib/widget/purchase_order_detail.dart

@@ -158,6 +158,14 @@ class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidg
       },
     ));
 
+    tiles.add(ListTile(
+      title: Text(L10().totalPrice),
+      leading: FaIcon(FontAwesomeIcons.dollarSign),
+      trailing: Text(
+        renderCurrency(widget.order.totalPrice, widget.order.totalPriceCurrency)
+      ),
+    ));
+
     tiles.add(ListTile(
       title: Text(L10().received),
       leading: FaIcon(FontAwesomeIcons.clipboardCheck, color: COLOR_CLICK),
@@ -407,7 +415,7 @@ class _PurchaseOrderDetailState extends RefreshableState<PurchaseOrderDetailWidg
       onTap: onTabSelectionChanged,
       items: [
         BottomNavigationBarItem(
-          icon: FaIcon(FontAwesomeIcons.info),
+          icon: FaIcon(FontAwesomeIcons.circleInfo),
           label: L10().details
         ),
         BottomNavigationBarItem(

lib/widget/stock_detail.dart

@@ -4,6 +4,7 @@ import "package:font_awesome_flutter/font_awesome_flutter.dart";
 
 import "package:inventree/app_colors.dart";
 import "package:inventree/barcode.dart";
+import "package:inventree/helpers.dart";
 import "package:inventree/l10.dart";
 import "package:inventree/api.dart";
 import "package:inventree/api_form.dart";
@@ -675,7 +676,9 @@ class _StockItemDisplayState extends RefreshableState<StockDetailWidget> {
         ListTile(
           title: Text(L10().purchasePrice),
           leading: FaIcon(FontAwesomeIcons.dollarSign),
-          trailing: Text(widget.item.purchasePrice),
+          trailing: Text(
+            renderCurrency(widget.item.purchasePrice, widget.item.purchasePriceCurrency)
+          )
         )
       );
     }