applets/weather: Show "feels like" indices next to actual temperature

There are three temperature indices ("Humidex", "Heat Index" and "Wind Chill") which provide a perceived temperature value under certain conditions (like high humidity or strong winds)

The decision on which one to use depends on the specific agency or the actual temperature (hot or cold), so they are mutually exclusive, but the purpose is the same

Show that value next to the actual temperature under the same umbrella, so it's more helpful to the users

	BEFORE	AFTER
Heat Index (noaa)
Humidex (envcan)