Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Fixed #5764: Fix manual conversion bug that convert empty string to NULL
Update submodules
Fixed #5766: Add native check to secure jsb functions usage
Fixed #5769: Fix CCControler link issue for js-tests and improve some build settings for templates
Feature #5765: Add create_js_root_obj util function for adding a named root object
Fixed #5765: Bind console.log function for force logs
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Issue #5570: Reactive UILayout relative test case
Merge pull request #630 from pandamicro/master

Bug fixes and bind console.log
Fixed #4735: Made cc.RenderTexture's beginWithClear accept color value from 0 - 255
Fixed #5773: Fix RenderTexture test render issue
issue #5695: update facebook testcase
use HttpMethod enum instead of int
Fixed #2030: Label text bounding error
Merge pull request #632 from pandamicro/master

Fixed #4735: Made cc.RenderTexture's beginWithClear accept 255 color value
Merge pull request #634 from VisualSJ/master

Fixed #2030: Label text bounding error
Merge pull request #633 from joshuastray/master

issue #5695: update facebook testcase
Update html5 ref
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js