Add SK53_bulk:load to discarded tags
Add SK53_bulk:load to discarded tags

Added as per consultation with SK53. This tag served a similar purpose to tiger:upload_uuid
1ec5/iD,tbicr/iD,edpop/iD,bagage/iD,AndreasHae/iD,bagage/iD,1ec5/iD,bagage/iD,zbycz/iD,AndreasHae/iD,ngageoint/hootenanny-ui,morray/iD,openstreetmap/iD,kepta/iD,digidem/iD,mapmeld/iD,digidem/iD,tbicr/iD,mapmeld/iD,energiekollektiv/openmod.sh-id,AndreasHae/iD,morray/iD,kartta-labs/iD,andreic-telenav/iD,openstreetmap/iD,mapmeld/iD,1ec5/iD,kartta-labs/iD,kepta/iD,ngageoint/hootenanny-ui,edpop/iD,ngageoint/hootenanny-ui,openstreetmap/iD,andreic-telenav/iD,edpop/iD,zbycz/iD,kartta-labs/iD,energiekollektiv/openmod.sh-id