Fixed Bug 7807

NPC Duplicates with xs/ys weren't being properly loaded, Special Thanks to Haruna.
Also fixes an issue with the instance empty timer.
http://hercules.ws/board/tracker/issue-7807-endless-tower/

Signed-off-by: shennetsind <ind@henn.et>
Merge branch 'master' of https://github.com/HerculesWS/Hercules