staff -> admins

* rename everything containing staff back to admin (as requested by ryan i've renamed commands like slconfig to saconfig but left "slconfig" as an alias)
* format almost every file correctly
* a few other improvements

src/main/java/me/totalfreedom/totalfreedommod/banning/Ban.java

@@ -267,6 +267,5 @@ public class Ban
                 it.remove();
             }
         }
-
     }
-}
+}