Refactor config to set DEBUG based on environment variable for better configuration management.

Remove debug print statement from hooks to clean up response handling.

inventory/routes/hooks.py

@@ -6,7 +6,6 @@ from . import main
 
 @main.after_request
 def prettify_or_minify_html_response(response):
-    print(app.debug, response.content_type)
     if response.content_type.startswith("text/html"):
         try:
             html = response.get_data(as_text=True)