Update Bukkit: 1.5.2-R1.0-4-ga70ffc5 - CraftBukkit: 1.5.2-R1.0-20-g58c4152

Bukkit:

CraftBukkit:
58c4152 Correctly set level name for 'world' option. Fixes BUKKIT-4474
0bd1942 Ocelots -> Ocelittle. Addresses BUKKIT-4449
Fixed StructureGrowEvent.getPlayer(); always returning null regardless of whether bone meal was used or not.