Show simple error messages when debug is True and debugging tools are not found

settings.py

@@ -324,22 +324,19 @@ if DEVELOPMENT:
         import rosetta
         INSTALLED_APPS += ('rosetta',)
     except ImportError:
-        #print 'rosetta is not installed'
-        pass
+        sys.stderr.write('DEBUG: rosetta is not installed\n')
 
     try:
         import django_extensions
         INSTALLED_APPS += ('django_extensions',)
     except ImportError:
-        #print 'django_extensions is not installed'
-        pass
+        sys.stderr.write('DEBUG: django_extensions is not installed\n')
 
     try:
         import debug_toolbar
         #INSTALLED_APPS +=('debug_toolbar',)
     except ImportError:
-        #print 'debug_toolbar is not installed'
-        pass
+        sys.stderr.write('DEBUG: debug_toolbar is not installed\n')
 
     TEMPLATE_CONTEXT_PROCESSORS += ('django.core.context_processors.debug',)