Btw, I tried this yesterday, and I got an error about "unhandled command from web: whitelist". I need to dig up the actual error, but it's also possible my Ubuntu VM was causing some weirdness. My only other Pi died after I spilled soup on it, oops.The web interface itself isn't new, but I added a couple buttons "BkLIST" and "WhLIST".
To enable the web version on the terminal rather than the standard curses terminal, you need to change rx.py command line options.
e.g. ./rx.py -l http:192.168.1.24:8080 --args "rtl=0" --gains 'LNA:36' -S 960000 -q 0 -d -100 -v 1 -2 -U -T trunk-test.tsv 2> stderr.2