Automatic export of localized badge graphics
Badge localizations are stored as different layers in badge.xcf. You open badge.xcf in Gimp, made your chosen layer visible, then export to the PNG you want. This would be better if automated from the command line.
This should be driven by the makefile and Gimp batch mode, maybe with an auxiliary shell script.
LANGS = de en ru
all: $(addprefix badge-,$(addsuffix .png,$(LANGS))
badge-%.png: badge.xcf
gimp --batch something
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information