Bug Squashing Update

Updated Pom to use variables.
Removed reward system as it just simply wasn't working.
Fix: Teleport spectators to the spectator spawn.
Fix: Delete inventory file when a player is removed from a field.
Fix: Apply potion effect on match start.
Fix: Sync issues with player inventories.
Fix: Only one team loses if the last players from each team don't die
simultaneously.
Fix: Remove a player's gear and potion effects when they die and set
them to spectators.
Fix: PlayerTanks default to not ready.
Fix: Join, Spectate command now requires the field name.
Add: Field names no longer need to include correct capitalization.
Renamed openCountryMenu to openTankMenu.
Fix: Setting points now have a null check.
Fix: Use hard coded Bukkit version.
Fix: PlayerFireEvent removed as it simply didn't work.
Add: PlayerTankDeathEvent now tracks Killer.
Fix: Redone formula for melee damage.
Fix: ReloadHandler now checks if XP level is higher than 0.
Fix: Console errors no longer pop up if a player's hand is empty or if
they have a bow.
Fix: Out of bounds code.
Fix: Register BattlefieldListener.
Fix: Player health now displays in the player list.
Fix: Player scoreboards cleared when a match ends.
Fix: Rate of fire formula switched.
Fix: Some vehicles had incorrect armor for Tracks and Turrets.
Fix: ItemMenu was not displaying text correctly so all of their display
icons are now minecarts.
Fix: Speed effect now ranges from Slowness 5 to Speed 5.