Merge branch 'MaggieHe' into version3.0
UI BUG
Merge branch 'version3.0' into SidneyFan
Optimization

Remove warnings
Remove TODOs
Rearrange constants
Merge branch 'SidneyFan' into version3.0
Fixed windows's bugs

ScrollPane UI
Merge branch 'version3.0' into MaggieHe