nazca #248555 Add safety belt on geograpraphical distance units [validation pending]

Do not accept other values than 'm' or 'km'

prioritynormal
typebug
done in0.6.0
load0.100
load left0.000
closed by#5689a4cc4915 [distance] Add safety belt on geographical distance units, closes #248555
patch[distance] Add safety belt on geograpraphical distance units, closes #248555 [applied]