Player Fixes

Several fixes which restore functionality and add compatibility with 1.7.2.

:white_check_mark: ​ **Fixed**
* Commons-Lang reference not working (Bukkit references 2.3, we require 3.1. Exceptions are thrown when attempting to use Bukkit's.)
* Fix NPE when setting speed (seen during restoration from persistence/disk.)
* Fix replacement networking code not being assigned before Bukkit calls, leading to an NPE. (#74)

:100: Tested working on CraftBukkit 1.7.2-R0.1 (Build #02943) with creation and persistence.