made several variables/functions private in NightlyData.php
made several variables/functions private in NightlyData.php

They had been temporarily made public for testing purposes.

kenirwin/Suma,cazzerson/Suma,cappadona/Suma,cazzerson/Suma,cazzerson/Suma,suma-project/Suma,rbwest/Suma,cazzerson/Suma,cappadona/Suma,cazzerson/Suma,suma-project/Suma,cappadona/Suma,rbwest/Suma,cazzerson/Suma,cappadona/Suma,rbwest/Suma,kenirwin/Suma,cappadona/Suma,cappadona/Suma,kenirwin/Suma,kenirwin/Suma,rbwest/Suma,suma-project/Suma,cappadona/Suma,rbwest/Suma,kenirwin/Suma,rbwest/Suma,kenirwin/Suma,suma-project/Suma