[optim] Optimized Chunk.scheduleBlockUpdate() ...

- use ShortObjMap with chunk coord keys instead of HashSet<PendingBlockUpdate>
  - deduplicate PendingBlockUpdate by coord
  - pool ShortObjMap and TreeSet objects

[optim] Little WorldServer.func_147456_g() optimizations (it is enough hot) ...

- removed unused variables
  - use ThreadLocalRandom instead of default world Random

[optim] Optimized World.getBlockIfExists()

[optim] Fixed Entity with old AI path recounting each tick if target is not reachable

Fixed player NBT data read/write out-of-sync ...

In ultramine core player data saves asynchronously, so it was possible to read OLD data after
NEW data requested to save, but has not really been written to the file.

[optim] Use buffered IO when writing non-compressed NBT to file

Fixed player renderDistance reset after death

Merge branch 'stable'

[compat] Fixed GalactiGreg ore generation

Merge branch 'stable' ...

# Conflicts:
#	build.gradle

Fixed /custmsg possible client crash

Fixed possible crashes caused by wrong eventProxy.startEntity(entity) placement

Fixed player lang reset after death

[optim] Optimized vanilla leaves decay

Fixed kick on invalid url in chat

[optim] Totally replaced LongHashMap & IntHashMap implementation to Koloboke collections

Fixed strip color sequences from log file

Fixed /killentity

Fixed /vanish lang

Fixed invisible players after teleportation

Merge branch 'stable'

Throw IllegalArgumentException from DataWatcher if object id < 0 (fix for thaumicenergistics)

Issue #47 Command unregister, fallback prefixes

Issue #50 Permissions moved out of the core

Issue #49 First service architecture draft

Fixed (previous commit) on client side

Issue #14 Fixed TileEntity owner assigning on TileEntity restoring

Issue #14 added WorldUpdateObject owner inference for pending updates and block events

[optim] ImportChunkLoader disposing ...

Now we don't wait for finishing of writing all worlds. Waiting only for current world, then closing region files. Currently implemented for ImportChunkLoader only, should be implemented for default chunk loader in future

Better hash for in-chunk block coords