Images for RTC - adding/changing images to web pages

[ps2270]

@caro27 as you have time (!):
Can you please look over the six RESOURCES web pages (only the index pages - NOT all the linked material) and see if you think these 6 web pages could benefit from (additional or different) images? If so, can you choose a few images and upload them to static-->images, properly named? I can help you if you need it.

Also, could you choose an image to put below the buttons on the Resources landing page, https://cu-mkp.github.io/research-teaching-companion/resources/ and send it to me for consideration?

As you have time!!