small fixes
SunExercise
[Zhenghan] style changed, new layout added and picture question involved
CSS changed
bug fixed
[Zhenghan] small fixes and new feature added
[Zhenghan] small fixes and new feature added
[Zhenghan] communication with turtle server, style changed and big bixes
[Zhenghan] communication bug fixed
[Zhenghan] userinfo and resources logic
[Zhenghan] userdata communication logic
[Zhenghan] communication logic and bug fixed
[Zhenghan] global badges
Merge pull request #2 from zhzhang2012/SunshineLibrary-master

Sunshine library master