Carousel add method to get the content of a tile

For the caoursel we need a way to modify an existing tile, for example to add a "toBeDeleted" class to the tile so it can be styled. Added a getTileContent(n) method so there is a supported way to do this.
Carousel add styles for slideshow tiles
Carousel fix location of the required javascript
Carousel remove javascript from all by v3 theme

Accidentally had the carousel javascript added here instead of in the v3 theme.