Do not drop xp/items on observer death

Solves #50
Change EventPriority on PlayerDropItem event
Merge pull request #51 from kosgan10/patch-1

Do not drop xp/items on observer death
This will work fine.
Merge pull request #53 from TheCso/patch-1

Update to the correct permissions node
Add new repo to pom.xml

The required dependencies will be added to the repo ASAP.
Update SportBukkit API

Almost completed the move to maven repo during OCN downtime
And SportBukkit too...