v.5.99.30

WORKING ! PLEASE be aware of possible issues May 9/10

Modified WSL terminal to gnome-terminal, as konsole has issues at Ubuntu-20.04
Improved PDF calculation via Powder for Debye Scattering Equation and CLIN/CQUAD

Currently went back to konsole, as gnome-terminal has issues with dbus start...

The terminal emulator "terminator" seems to work best on Ubuntu18.04 and 20.04
This distribution should work OK right now on 18.04 and 20.04