Fixed Slideshow and made AWS S3 Images Public

Now the slideshow uses three images (with static urls in html code
[temporary measure]) with urls from was s3. The next step for this is
to make an ajax request (probably to a script that will adjust the
sizes of the images based on the device dimensions) to get all images
and then input them into the slideshow.

Slideshow wasn't cycling properly, but I fixed this.