simplify logger creation (move logic into a function in main packages)

Ensure logger creation is consistent between Web and Collector
Create logger in main, pass down to downstream functions (like gin)
In debug mode, print a copy of AppConfig
Better debugging for logger.

webapp/backend/pkg/web/handler/send_test_notification.go

@@ -13,7 +13,7 @@ import (
 // Send test notification
 func SendTestNotification(c *gin.Context) {
 	appConfig := c.MustGet("CONFIG").(config.Interface)
-	logger := c.MustGet("LOGGER").(logrus.FieldLogger)
+	logger := c.MustGet("LOGGER").(*logrus.Entry)
 
 	testNotify := notify.New(
 		logger,