A few additional enhancements

I'm still chugging along decoding the settings in HID feature report 0xB (11) and managed to decipher a few more items from the user interface section of settings:
* language
* temperature units
* flow units
* pressure units
* decimal separator
* info pages
* key settings (no support for programmable key settings yet)
* display settings
* menu settings
* date+time settings
* system standby settings

If by chance I missed an enum or string definition, it won't break anything. However, unsupported items will be referenced as unknown.