issue #5183, add CCLayoutExecutant file
issue #5183, refator LayoutExecutant
Fix Progress Action.
issue #5183, add LayoutProtocol
issue #5183, done
issue #5183, done
issue #5183, remove no needed type
Merge branch 'v3' into refactorLayout

Conflicts:
	cocos/ui/UILayout.cpp
issue #5183, add layout parameter type to widget for convenient access
show uploading file in play scene
fix potential problem
remove inner function from header file
Merge branch 'v3' of https://github.com/cocoscodeide/cocos2d-x into v3
fix build error
fix UIText's fontSize

if set fontsize before setting font family, fontsize was wrong
commnet out the Renderer test in PerformanceTest
replace texture resources
Cleanup project file.
[REM]: old library references. New libraries are under prebuilt.
Merge pull request #14 from bofeng-song/v3

show uploading file in play scene
Merge pull request #6805 from andyque/fix_broken_test_resource_file

fix cpp-tests resource crash