Add getStringLength() support for UITextField
Add shadow, outline, glow filter support for UITextField
refactor UIButton setColor & setOpacity
refactor UICheckBox setColor & setOpacity
refactor ImageView setColor & setOpacity
refactor LoadingBar setColor & setOpacity
refactor Slider setColor & setOpacity
refactor Text setColor & setOpacity
refactor TextAtlas setColor & setOpacity
refactor TextBMFont setColor & setOpacity
refactor TextField setColor & setOpacity
refactor Widget setColor & setOpacity
refactor Scale9Sprite setColor & setOpacity
Remove unnecessary Type::TTF Check

Remove unnecessary TTF type check on enableOutline or enableGlow function。
Update UIText.cpp
Remove misleading comment, add new comment

Remove misleading comment, add new comment for enableOutline
Add const for getStringLength() function
* Set COCOS2D_VERSION to 3.2.0
fix assertions

'label' could be not caught after previous assertions
Update CCControlButton.cpp