[Global] Add PlayerGridMove and PlayerChunkMove events. Adds #59
* Grid event used in every Nodes involving move event
* Chunk event available for eventual future needs and as a lib
[Global] Unify configs, modify AbstractConfig to allow other Plugins than Nodes. Fixes #60
[NCore] Add some methods to TimeUtils
[Global] Fix "unchecked" warning (Still for #60)
[Global] Cleanup - rename some constants
[Global] Implement Updater. Adds #55