Internal Gains management

Created by: bahujean

-- Label Building occupants --

1- Up to now, internal gains are attributes in the featureTypes:

• as "internGains" within the "occupancy" featureType
• as "heatLosses" within the "electricalAppliances" featureType

They design the same effect and are at the same level. That's why it could be relevant to rename both attributes "heatDissipation".

2- It could be also relevant to insert an "internalGains" attribute within the "UsageZone" featureType. User could then choose if he wants to directly use a simplified attribute or provide more detailed calculation for internal Gains.