MySQL Bugfix
```
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IF NOT EXISTS `Slot` INT(1) NULL DEFAULT NULL AFTER `Status`' at line 1
```
And minor code changes
Removed permissiond regestration from plugin.yml and regestred via code.
- The Slot See and Use Permissions are now included in OP and commandgui.admin
