Fixed #5704: fixed a bug of ccui.TextField
Merge branch 'Iss5704_CCUIPreformance' of https://github.com/VisualSJ/cocos2d-html5 into Iss5704_CCUIPreformance
Fixed #5704: correct some properties of ccui.TextField.
Merge pull request #2013 from dingpinglv/Iss5704_CCUIPreformance

Fixed #5704: fixed a bug of ccui.TextField
Issue #5704: CCUIPreformance - Fixed a problem about checkbox default value