Summary:
debug message if user tries to create a banner with a duplicate name
Detailed Description:
If a banner with the entered name already exits, the user is presented with:
Debug: (0.042034) - (usage: 4712616) - (peak: 4731552)
SELECT banner_id FROM cms_module_banners WHERE name = 'foo' LIMIT 1
Debug: (0.042116) - (usage: 4712744) - (peak: 4732024)
Should probably have a more graceful warning, or just add a sequential number to
the name when creating the ID.