The top links and OpenRG image were all broken on all the expert pages (see current version of https://www.openrg.com/experts/evans.html). This PR fixes all those links in each of the pages.
I adjusted the formatting in a few of the expert pages by standardizing paragraph breaks, font sizes, and hyperlinks.
I updated Evans' bio, and made some small updates to Jensen's and Ghenis' respective bios.
This PR does the following with the expert bios:
cc: @jdebacker @MattHJensen