Merge pull request #1973 from VisualSJ/NodeRGBA

merge cc.NodeRGBA and cc.LayerRGBA to cc.Node
issue #5685:remove useless code in actioniterval
issue #5685: fix bugs in create function
Merge pull request #1975 from VisualSJ/NodeRGBA

Issue #5671: Fixed a bug about generateTintImage
Merge pull request #1976 from joshuastray/use_new_in_sample

Use new in sample
Issue #5697: Fixed a bug that LabelBMFont lose some text