router: fix tests

They were broken due to the high-precision color changes.
Move constant
Daemon: fix dimmer direction, was inverted

Now 0x00 is darkest (off), 0xFF is brightest.
Daemon: 16 bit precision for dimmer
Daemon: document default port for http api
Daemon: set version to 0.1.1
Daemon: support jsonp
HACKING: document jsonp
Daemon: version 0.1.2
Daemon: back to -SNAPSHOT
Daemon: allow same-origin policy bypass

*duck*
Daemon: v0.1.3
Daemon: back to -SNAPSHOT
Daemon: webhook support
Documentation
Fix a desynchronisation bug.

When a start byte was received during a frame, the message that was being
assembled at the time was not correctly cleaned up.
firmware: colorfully display the firmware version during boot
firmware: actually update pwm state in display_version()
util: version-color.py
firmware: display something during boot even without a channel mapping