Cloned from Sailfish-MightyBoard

https://github.com/jetty840/Sailfish-MightyBoardFirmware
Adding ReplicatorG repository from jelly840
Two more PreviewPanel for XY-view and XZ-view

Adding two more panels for XY-view and XZ-view.

Because Java 3D does not allow one model in multiple scene, we have to
make a model copy for each scene, named as xyViewPanel and xzViewPanel.
Merge branch 'master' of https://github.com/MBot3D/WestLaker