Renamed 'customer-order' app to 'customer'

- This app should manage more than just orders
- Moved the 'Customer' model into this app

InvenTree/InvenTree/settings.py

@@ -51,7 +51,7 @@ INSTALLED_APPS = [
     'stock.apps.StockConfig',
     'supplier.apps.SupplierConfig',
     'build.apps.BuildConfig',
-    'customer_orders.apps.CustomerOrdersConfig'
+    'customer.apps.CustomerConfig'
 ]
 
 MIDDLEWARE = [

InvenTree/InvenTree/urls.py

@@ -13,7 +13,7 @@ from supplier.urls import supplier_urls
 
 from build.urls import build_urls
 
-from customer_orders.urls import customer_orders_urls
+from customer.urls import customer_orders_urls
 
 from django.conf import settings
 from django.conf.urls.static import static