Added PartCategory

- Parent can be null (top-level category)
- Parent can be other PartCategory

InvenTree/InvenTree/settings.py

@@ -37,6 +37,8 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    
+    'part.apps.PartConfig'
 ]
 
 MIDDLEWARE = [

InvenTree/InvenTree/urls.py

@@ -13,9 +13,10 @@ Including another URLconf
     1. Import the include() function: from django.conf.urls import url, include
     2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
 """
-from django.conf.urls import url
+from django.conf.urls import url, include
 from django.contrib import admin
 
 urlpatterns = [
+    url(r'^part/', include('part.urls')),
     url(r'^admin/', admin.site.urls),
 ]