Update Dependencies + Add Metrics
- Bukkit 1.5.1-R0.2 -> 1.5.2-R0.2
- Vault 1.2.24 -> 1.2.26
- Maven Comipler 3.0 -> 3.1
- Added Metrics-Lite for statstics
Signed-off-by: Steven Downer <grinch@outlook.com>