Fixes build on OpenBSD.

PR #856 broke command line editing by wrapping stdout with a filter that
interprets ANSI escape sequences to fix colored printing on windows.
Implement the printer in Go instead so it can do its own
platform-dependent coloring.

As a nice side effect, the JS console is now noticeably more responsive
when printing results.

Fixes #1608
Fixes #1612

The code in config.go is unused. The main reason for removing it is to
get rid github.com/rakyll/goini in Godeps (it has no license).

This includes a fix adding a timeout to router discovery requests.