Ability to suppress warnings when node is not by itself

In my most recent project, I've tended to need content types that include a galleria in the full view view and some basic information in teaser view, used when displaying many summaries together using Views. This worked well except that when the nodes are not by themselves on a page, a Drupal warning is printed at the top: "Gallerias only display when viewing a node by itself on the page."

I suspect that most people who use the module understand that this is the case, and because of that, it would be good to give the option to suppress this warning, as it makes any sort of summary display look like something's going wrong, even though they're working as intended. I've attached a small patch that adds this option. Thanks!