Sales order support (#438)

* Add new models for SalesOrder

- Create generic Order and OrderLine models with common functionality

* Refactor

- Move some widgets around
- Cleanup directory structure

* Add link to home screen and nav drawer

* Add SalesOrder list widget

* Linting fixes

* Fix string

* Refactor PurchaseOrderDetailWidget

* Tweaks to existing code

* linting

* Fixes for drawer widget

* Add "detail" page for SalesOrder

* Add more tiles to SalesOrder detail

* Allow editing of salesorder

* add list filters for sales orders

* Display list of line items

* Customer updates

- Display customer icon on home screen
- Fetch sales orders for customer detail page

* Cleanup company detail view

* Create new sales order from list

* Stricter typing for formFields method

* Create new PurchaseOrder and SalesOrder from company deatil

* Status code updates

- Add function for name comparison
- Remove hard-coded values

* Update view permission checks for home widget

* Add ability to manually add SalesOrderLineItem

* Add nice progress bar widgets

* Display detail view for sales order line item

* edit SalesOrderLineItem

* Fix unused import

* Hide "shipped items" tab

- Will be added in a future update

lib/l10n/app_en.arb

@@ -235,9 +235,15 @@
   "credits": "Credits",
   "@credits": {},
 
+  "customer": "Customer",
+  "@customer": {},
+
   "customers": "Customers",
   "@customers": {},
 
+  "customerReference": "Customer Reference",
+  "@customerReference": {},
+
   "damaged": "Damaged",
   "@damaged": {},
 
@@ -440,15 +446,21 @@
   "homeShowPo":  "Show Purchase Orders",
   "@homeShowPo": {},
 
+  "homeShowPoDescription": "Show purchase order button on home screen",
+  "@homeShowPoDescription": {},
+
+  "homeShowSo": "Show Sales Orders",
+  "@homeShowSo": {},
+
+  "homeShowSoDescription": "Show sales order button on home screen",
+  "@homeShowSoDescription": {},
+
   "homeShowSubscribed": "Subscribed Parts",
   "@homeShowSubscribed": {},
 
   "homeShowSubscribedDescription": "Show subscribed parts on home screen",
   "@homeShowSubscsribedDescription": {},
 
-  "homeShowPoDescription": "Show purchase order button on home screen",
-  "@homeShowPoDescription": {},
-
   "homeShowSuppliers": "Show Suppliers",
   "@homeShowSuppliers": {},
 
@@ -576,6 +588,9 @@
   "level": "Level",
   "@level": {},
 
+  "lineItemAdd": "Add Line Item",
+  "@lineItemAdd": {},
+
   "lineItem": "Line Item",
   "@lineItem": {},
 
@@ -687,9 +702,15 @@
   "outstanding": "Outstanding",
   "@outstanding": {},
 
-  "outstandingOrderDetail": "Show outstanding items",
+  "outstandingOrderDetail": "Show outstanding orders",
   "@outstandingOrderDetail": {},
 
+  "overdue": "Overdue",
+  "@overdue": {},
+
+  "overdueDetail": "Show overdue orders",
+  "@overdueDetail": {},
+
   "packaging": "Packaging",
   "@packaging": {},
 
@@ -997,9 +1018,21 @@
   "returned": "Returned",
   "@returned": {},
 
+  "salesOrder": "Sales Order",
+  "@salesOrder": {},
+
   "salesOrders": "Sales Orders",
   "@salesOrders": {},
 
+  "salesOrderCreate": "New Sales Order",
+  "@saleOrderCreate": {},
+
+  "salesOrderEdit": "Edit Sales Order",
+  "@salesOrderEdit": {},
+
+  "salesOrderUpdated": "Sales order updated",
+  "@salesOrderUpdated": {},
+
   "save": "Save",
   "@save": {
     "description": "Save"
@@ -1125,6 +1158,9 @@
   "serverNotSelected": "Server not selected",
   "@serverNotSelected": {},
 
+  "shipped": "Shipped",
+  "@shipped": {},
+
   "sku": "SKU",
   "@sku": {},