update landclaim.sk and moderate.sk

- /front travel set is now an option
- /travelmove still in place for legacy purposes
- /owner <player> now actually does everything it should
- Monitor Mode created
- moderators are now required to enter 'Monitor' mode to be able to
teleport to players
- Logs logs logs logs logs
Merge branch 'master' of https://github.com/ismooch/skript