After finding the nifty automated tool by "Let's Encrypt" and trying it out, I've now enabled HTTPS site-wide. Your bookmarks and other links should now take you automatically to the secure site.
The process did initially break all the maps on the site, but I think I have them all fixed now. If you trip over one I missed, or anything else that's broken, post a comment or send me an e-mail.
EDIT (1/25/17 9:38PM): Yes, I'm aware the Live Bandscan page is now broken. But I did get it to log data again, which was broken for an hour. I accomplished this by turning off the automatic redirect until I figure out how to work around that problem.