Popover would benefit from class indicating whether title was hidden.

Created by: kevinparkerson

While the popover control is really nice, the dynamic nature of the displayed markup makes it difficult to apply styling for themes. The title in particular is a problem I'm running into - it is set to "display: hidden" via javascript if not declared in the options upon initialization. Since there are no on-page indicators that this has happened, it is difficult to style the arrow appropriately. Here is a demonstration of the problem on my public dropbox.

What I'm proposing is that the popover control add a class such as no-title to the parent container of the dynamically generated markup to indicate that the title has been hidden. This way themes can have more control over the popover arrow colors in different scenarios. I'd actually recommend that the class itself also be responsible for hiding the title vs an inline style applied via javascript, but since that code has already been written that way it might be too jarring to developers to change now.

I will make a pull request for this issue asap.