Many, many bug fixes

- Fix permission checks
- Fix unban command
- getOfflinePlexPlayer no longer uses cache
- Register worlds before trying to load gamerules
- Customizable ban messages

src/main/java/dev/plex/util/PlexUtils.java

@@ -251,7 +251,7 @@ public class PlexUtils extends PlexBase
 
     public static long hoursToSeconds(long hours)
     {
-        return hours * 60 * 60;
+        return hours * 3600;
     }
 
     public static long minutesToSeconds(long minutes)