Scroll bar is now hidden when scrolling is not possible
Scrolling can now be done with mouse dragging
New increasing cost to unlocks
Cost is now in orbs instead of levels
Removed cost cap to config
Fixed unlocking more than possible crashing the game
Added language support
*cough cough* Achievements! *cough cough*

PS: Chest support may not be possible due to client-server sync issues that I can't seem to get around. Sorry :(