Bukkit

- a few bug minor fixes (key blocks dissapearing, players not able to leave ect.)
- added in a leave command (/pp leave) by default
- added in a command to change wether a specific course uses course progression or not (turning this off will make it to where a course does not need to be completed in a certain order to do it (WARNING: These courses will still count as their course level for progression purposes, players just won't need to be a certain parkour level to do them). This means doing course 4 as non progressive 1 2 3 and 5 as progressive, course four would need to be beaten at least once to do course five.. but it can also be done 4 times without doing any of 1-3 to get course 5 unlocked.)
Command: /pp prog # true/false (# is the number of the course).

- Stated above