Merge pull request #637 from pandamicro/master

Issue #5780: Add -ObjC link flag to avoid Facebook plugin link issue
Merge pull request #638 from pandamicro/master

Update Plugin-x ref with FacebookAgent implementation and Plugin-x refactoration
Refactor #5685: use new instead of create in EditBoxTest.js, TableViewTestScene.js
fix the  cc.view.setDesignResolutionSize bug。
Merge pull request #639 from joshuastray/master

Refactor #5685: use new instead of create in EditBoxTest.js, TableViewTe...
Merge pull request #640 from wuzhiming/fb_3rd

fix the  cc.view.setDesignResolutionSize bug。
Issue #5742: Add js_load_remote_image for load a image url to a texture in js
Issue #5781: Update visibleRect after setDesignResolutionSize
Issue #5781: Avoid script issue on desktop in test case
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js