Add rounded corners to character icons

[2br-2b]

Description:

Should fix #586. I haven't tested this locally, but I think it's a small enough change that it'll work.

Checklist:

• [ ] The code change is tested and works locally.
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation if necessary
• [x] There is no commented out code in this PR.
• [ ] My changes generate no new warnings (check the console)

[datdamnzotz]

Going to close this one because It was just easier to re-create the pull request and fix a couple other css issues while I was at it in PR #593