Fixed #5924: fixed a bug of cc.Component that its onExit isn't called.
Merge pull request #2252 from dingpinglv/Iss5924_ComponentBug

Fixed #5924: fixed a bug of cc.Component that its onExit isn't called.
Issue #5925: Cannot read property 'content' of undefined CCEGLView.js:257
Merge pull request #2253 from VisualSJ/5925

Issue #5925: Cannot read property 'content' of undefined CCEGLView.js:25...
Added fault tolerance to cc.Node for cc.Component.
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5924_ComponentBug
Merge pull request #2254 from dingpinglv/Iss5924_ComponentBug

Added fault tolerance to cc.Node for cc.Component.
Make cc.async.waterfall similar to async.waterfall of async.js.
Fixed #5930: Fix API name mistake
Fixed #5931: Change cc.winSize correctly after applying resolution policy
Fixed #5927: fixed a mistake of ccs.LabelAtlasReader
Merge pull request #2258 from dingpinglv/Iss5927_GUIReader

Fixed #5927: fixed a mistake of ccs.LabelAtlasReader
Fixed #5927: fixed a mistake of ccs.GUIReader
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5927_GUIReader
Merge pull request #2259 from dingpinglv/Iss5927_GUIReader

Fixed #5927: fixed a mistake of ccs.GUIReader
Merge pull request #2256 from SmallAiTT/cc_async_waterfall

Make cc.async.waterfall similar to async.waterfall of async.js.
Fixed #2260: _removeByComponent method have bad "if"
Issue #5935: Support timeline
Issue #5936: Scale9Sprite - Effect of canvas and webgl mode is not the same
Merge pull request #2262 from VisualSJ/5936-Scale9Sprite

Issue #5936: Scale9Sprite - Effect of canvas and webgl mode is not the s...