Re-added NMS, Plugin update checker, DH support fix, code bug-fixing and refactoring.
+ Added check for new plugin updates
+ Now the VoteGUI is only one menu.
+ Refactored CurrencyManager.java that now holds all important currency transations.
+ Re-added new NMS classes to support chest open animations and item names.
+ Fixed an issue in /rsw coins command that would not prevent wrong operation types and null coins.
+ New command to check balance /rsw bal
+ Fixed an issue with DecentHolograms support.
+ Code refactor, bug-fixes and removed excess static methods and accesses