units.js: Only overwrite defaults if necessary
units.js: Only overwrite defaults if necessary

dkm/skylines,TobiasLohner/SkyLines,snip/skylines,shadowoneau/skylines,shadowoneau/skylines,snip/skylines,skylines-project/skylines,Turbo87/skylines,Harry-R/skylines,dkm/skylines,skylines-project/skylines,TobiasLohner/SkyLines,shadowoneau/skylines,RBE-Avionik/skylines,Harry-R/skylines,RBE-Avionik/skylines,kerel-fs/skylines,RBE-Avionik/skylines,RBE-Avionik/skylines,dkm/skylines,dkm/skylines,kerel-fs/skylines,snip/skylines,TobiasLohner/SkyLines,Harry-R/skylines,shadowoneau/skylines,kerel-fs/skylines,skylines-project/skylines,skylines-project/skylines,Turbo87/skylines,Turbo87/skylines,Turbo87/skylines,Harry-R/skylines