Add voter registration button in "about" page, similar to 5calls.org site's done page

[dektar]

See https://5calls.org/issue/hr722-national-abortion-ban-/done/

URL should probably be: https://www.feelgoodimpact.org/partners/5calls-verify?utm_source=partner&utm_medium=**android**&utm_campaign=5calls&utm_term=verify&utm_content=5calls_lp_1

Website has this prompt text, which we could use or shorten:

Check your registration

Make a permanent impact. Check if you're registered to vote or register for the first time. Vote in your next election to ensure your voice continues to be represented.