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 #6805 from andyque/fix_broken_test_resource_file

fix cpp-tests resource crash
Package the binary files of cocos2d-console in git-achive-all.
Merge pull request #6810 from natural-law/v3

Package the binary files of cocos2d-console in git-achive-all.
Merge branch 'v3' into refactorLayout
issue #5138, add Groups in Xcode
[ci skip]
issue #5183, refactor
issue #5183, refactor obscure functions
issue #5183, refactor UIScrollView
issue #5183, add deprecated function for Widget
accelerometer fix
Merge pull request #6817 from minggo/accelerometer-fix

[ci skip]accelerometer fix
[Jenkins][ci skip] Add check slave online status to watchdog
Merge pull request #6808 from Mazyod/cleanup-2d-platform

Cleanup 2d/platform library references
Merge pull request #6818 from lmskater/add-watch-slave-offline

[Jenkins][ci skip] Add check slave online status to watchdog
Release Notes for v3.1
Merge pull request #6821 from ricardoquesada/release_notes_3_1

Release Notes for v3.1