Merge pull request #7720 from samuele3hu/v3_module

Modify the mechanism that files copy to lua-empty-test and lua-template and fix some bugs
fixed Widget's Children reload textures change RGBA issue
[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #7730 from CocosRobot/update_cocosfiles_1407740805

[AUTO][ci skip]: updating cocos2dx_files.json
Merge pull request #7729 from andyque/fixCascadedColor

fixed Widget's Children reload textures change RGBA issue