Add missing senators from the 116th congress

[pandringa]

Here's a list of the newly-seated senators who are still missing photos, and a possible photo for each. I'm happy to submit a PR with these photos, if that would be helpful to get them merged in.

Thanks!

• Rick Scott - S001217 (This photo is available on the Bioguide and Budget committee site, and Wikipedia lists it as public domain)

• Mitt Romney - R000615 (See #166)

• Joshua Hawley - H001089 (This photo is available on Sen. Hawley's website and the Judiciary Committee site, and Wikipedia lists it as public domain)

• Mike Braun - B001310 (A Wikipedia user found this full-sized version of the photo on the Health, Education, Labor, and Pensions committee site)

[hugovk]

Thanks, a PR would be great!