Updated to Craftbukkit 1.4.7-R0.1

Updated references to Craftbukkit and nms code to use v1_4_R1 instead of v1_4_6
Swapped Metrics for (an updated version of) MetricsLite, since no custom
graphs are present.
Changed non-static references to the static Config methods to static
references.
Working build: http://d.pr/f/zh3V