new features

options to tell crawlers / search engines you dont wanna be indexed
- either globally with --no-robots or single volumes using volflag norobots
- allow crawlers inside a volume with volflag robots
- or just use robots.txt like usual ( ´ w `)
--force-js disables plain HTML folder listings, making things harder for crawlers who ignore the hints
- internet explorer 9 is the oldest surviving browser
--html-head to append additional HTML to the <head> section of all pages

bugfixes

inaccurate server URLs displayed on startup
- correct protocol based on port / --http-only / --https-only
- Windows: ignore interfaces with no ethernet cable connected
- Windows: show URLs for all IPs on each interface
- Linux: show link state next to URLs
reset console color on exit