remove 'New' from 'New Earth Empire' to match Kuvira's canonic description in B4E10
Building tweaks. UB pushed earlier to public school.
Buff Spirit Cannon defence, since movement is already a harsh enough penalty. Change resource requirement from 1 Uranium to 1 Oil + 1 Aluminium.
Kuvira's war theme is now the Book 4 trailer music :)
Fixed crash bug caused by incorrect UB BuildingClass. Oops
Fixed the no-music bug