added grid resize functionality to backend of Level_Editor
Merge branch 'scrolling_platformer' of https://github.com/duke-compsci308-spring2013/vooga into scrolling_platformer
got rid of System.out's
refactored LevelEditor and ILevelEditor
Merge branch 'scrolling_platformer' of https://github.com/duke-compsci308-spring2013/vooga into scrolling_platformer