Issue 147 solarthermal#150

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carlesRT wants to merge 2 commits intomasterfrom

issue_147_solarthermal

Commits on Jan 17, 2020

Add variable IrrDif_g to the RadiationPortGeneral to give information how much of diffuse radiation comes from the ground and set value in TransfoemrIsotropic. (Needed for the solar thermal collect…
carlesRT
committed
Add incident angle modifiers for the diffuse radiation (sky and ground diffuse).
carlesRT
committed