Replace images on homepage

[lynwilhelm]

Graham requested some slightly more refined screenshots for the homepage guidance. They are too small and a bit noisy, including some distracting UI that is not pertinent to the text.

I will be reproducing the screenshots and using Photoshop to blur the backgrounds of some photos that need that treatment.

Implementation notes:

1. Please replace carousel images. (688x300 max size). This is related to some work I previously requested, which was to add a couple things to the carousel to improve the look/behavior.
2. Yoi will also need to update the content for the first image to reflect the new group by options! (Structure, followed by plate barcode)

[lynwilhelm]

Here are the image to replace existing. @SeanLeRoy you may want to check them out.

homepage_images.zip