Rework /addlevels to use the built-in Bukkit command stuff.

src/main/resources/config.yml

@@ -362,8 +362,6 @@ Commands:
         Enabled: true
     addxp:
         Enabled: true
-    addlevels:
-        Enabled: true
     ptp:
         Enabled: true
         Cooldown: 30

src/main/resources/locale/locale_en_US.properties

@@ -686,4 +686,5 @@ Smelting.Listener=Smelting:
 Smelting.SkillName=SMELTING
 
 #COMMAND DESCRIPTIONS
-Commands.Description.Skill=Detailed skill info for {0}
+Commands.Description.addlevels=Add mcMMO levels to a user
+Commands.Description.Skill=Detailed mcMMO skill info for {0}

src/main/resources/plugin.yml

@@ -45,8 +45,6 @@ commands:
         aliases: []
         description: Add XP to a user
     addlevels:
-        aliases: []
-        description: Add levels to a user
     mcability:
         aliases: []
         description: Toggle whether or not abilities get readied on right click