Added stock page

InvenTree/stock/views.py

@@ -0,0 +1,12 @@
+from django.shortcuts import render, get_object_or_404
+from django.http import HttpResponse
+
+from .models import Warehouse, StockItem
+
+def index(request):
+    
+    warehouses = Warehouse.objects.filter(parent = None)
+    
+    return render(request, 'stock/index.html',
+                  {'warehouses': warehouses
+                  })