Consistent Demandflow labels

[dirixmjm]

Many of the Demand Flow labels have inconsistencies in terms of additional spaces between symbols, character case as well as completely different names.
For example "laundry room" and "washroom", "valve" and "flap".
https://github.com/arjenhiemstra/ithowifi/blob/master/software/NRG_itho_wifi/main/devices/demandflow.h

Are these labels automatically generated / retrieved from an ITHO devices?
If not I'll have a stab and improving them.

Best regards,
Marc