allow owner commands (set avatar, game, and name) to be used in DM

src/main/java/com/jagrosh/jmusicbot/commands/SetavatarCmd.java

@@ -37,6 +37,7 @@ public class SetavatarCmd extends Command {
         this.arguments = "<url>";
         this.ownerCommand = true;
         this.category = bot.OWNER;
+        this.guildOnly = false;
     }
     
     @Override

src/main/java/com/jagrosh/jmusicbot/commands/SetgameCmd.java

@@ -33,6 +33,7 @@ public class SetgameCmd extends Command
         this.arguments = "[action] [game]";
         this.ownerCommand = true;
         this.category = bot.OWNER;
+        this.guildOnly = false;
         this.children = new Command[]{
             new SetlistenCmd(bot),
             new SetstreamCmd(bot),
@@ -65,6 +66,7 @@ public class SetgameCmd extends Command
             this.arguments = "<username> <game>";
             this.ownerCommand = true;
             this.category = bot.OWNER;
+            this.guildOnly = false;
         }
 
         @Override
@@ -99,6 +101,7 @@ public class SetgameCmd extends Command
             this.arguments = "<title>";
             this.ownerCommand = true;
             this.category = bot.OWNER;
+            this.guildOnly = false;
         }
 
         @Override
@@ -130,6 +133,7 @@ public class SetgameCmd extends Command
             this.arguments = "<title>";
             this.ownerCommand = true;
             this.category = bot.OWNER;
+            this.guildOnly = false;
         }
 
         @Override

src/main/java/com/jagrosh/jmusicbot/commands/SetnameCmd.java

@@ -33,6 +33,7 @@ public class SetnameCmd extends Command {
         this.arguments = "<name>";
         this.ownerCommand = true;
         this.category = bot.OWNER;
+        this.guildOnly = false;
     }
     
     @Override

src/main/java/com/jagrosh/jmusicbot/commands/ShutdownCmd.java

@@ -33,6 +33,7 @@ public class ShutdownCmd extends Command {
         this.help = "safely shuts down";
         this.ownerCommand = true;
         this.category = bot.OWNER;
+        this.guildOnly = false;
     }
     
     @Override