Add numeric 'srg' names <-> ProjectAres CB 1.5 mappings

py chain.py 1.5/obf2acb.srg 1.5/obf2num.srg  | sort > 1.5/num2acb.srg
Add CraftBukkit 1.4.7 -> ProjectAres CB 1.5 mappings

py chain.py 1.4.7/num2cb.srg 1.5/num2acb.srg | sort > 1.5/cb146-to-acb.srg