Photos images

I needed to refactor some of the photo styling once I realized I had some things wrong

got rid of .photo-sm (md, lg) b/c what I was actually seeing was the full container width photo...so I changed them all to .photo and made them full width

the .photo-sm is now .photo-thumbnail which i think is more appropriate

changed .photo-alum to .photo-bio since it's used for staff and graduates, and for-hire section


does it all look good?