remove spammy WASAPI logs
Automatically select preferred device if inserted into different USB port.

- Strip out the port from the device name returned by WASAPI
- Strip out any port names in existing config to maintain existing device selection on upgrade

Note: could do this for other audiosystems but WASAPI's the only important one on Windows and this doesn't happen on Mac

#FOR_CORE
Merge branch 'master' of github.com:Metaswitch/libjitsi