Set carousel height to viewer height

[allanaaa]

I would like a setting to ensure the carousel always fits in the vh - or maybe just have it as default?

When the media display is set to large, we have images 800 pixels tall (by default), plus image titles, captions, the navigation dots underneath, and the carousel title. Since the images are the main issue, maybe we could just set a max-height:75vh on .slick-slide img. I realize all the text will vary in length and by theme, but this would get us most of the way there.

[matthewjmckinley]

Fixed in latest commit