update: admin.py retrocompatibility

djangoldp/admin.py

@@ -4,6 +4,12 @@ from django.conf import settings
 from django.contrib import admin
 from .models import LDPSource, Model
 
+for package in settings.DJANGOLDP_PACKAGES:
+    try:
+        import_module('{}.admin'.format(package))
+    except ModuleNotFoundError:
+        pass
+
 for package in settings.DJANGOLDP_PACKAGES:
     try:
         import_module('{}.models'.format(package))