Add better plugin description + new example plugin

Add better plugin description + new example plugin

testPlugin/signals.py

@@ -0,0 +1,15 @@
+# -*- coding: utf-8 -*-
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.contrib.auth.models import User
+from .models import TestPluginSettings
+
+
+@receiver(post_save, sender=User)
+def create_user_settings(sender, instance, created, **kwargs):
+    """Create default plugin settings when a new user is created"""
+    if created:
+        TestPluginSettings.objects.create(
+            user=instance,
+            plugin_enabled=True
+        )