WARNING: Please Read this before updating

Added

1. Mee6 leveling algorithm
2. Leveling Roles was changed to Leveling Rewards (This is why you need to read this)
3. Ability to override help message

Fixes

1. Error on closing/reopening ticket for a ticket whose user left
2. fix not passing placeholder things when parsing embed footer icon url
3. move createpanel command to Tickets Admin category
4. Fix libertybans problems with retrieving player name (uses libertybans api instead of bukkit api now)
5. fix leveling roles not being given
6. Use slf4j trick to customize logging from our libraries, fixes errors on some software and on Mohist
7. Other minor bug fixes.