bookmarklet JS and Android app: catch lingering cross-domain exceptions in the scan for updated content

bugfix: on some local-net setups, JS filter switches still tried to set cookies with port numbers in domains

option to power-cycle a router via home-control equipment (just Pi-mote for now), in case of router crash while you're asleep or something

adjuster.py is now Python-3 compatible (still works on Python-2) + supports Tornado 6.x (still works on previous versions)