Merge pull request #2295 from joshuastray/new_renderer

add webgl renderer command for spine
Issue #5933: UIText UITextField UILayout(clipping)
Merge pull request #2296 from VisualSJ/Renderer-canvas

Issue #5933: UIText UITextField UILayout(clipping)
Issue #5933: NodeGrid
Merge pull request #2297 from VisualSJ/Renderer-canvas

Issue #5933: NodeGrid
Issue #5941: refactor ClippingNode for new renderer webgl
Merge branch 'Renderer' of https://github.com/cocos2d/cocos2d-html5 into Iss5941_WebGLRenderer
Merge pull request #2298 from dingpinglv/Iss5941_WebGLRenderer

Issue #5941: refactor ClippingNode for new renderer webgl
Issue #5933: Armature
Issue #5933: PageView Element does not automatically update
Merge pull request #2300 from VisualSJ/Renderer-canvas

Issue #5933: Armature
add webgl renderer command for cc.ScrollView