issue #3945 Refactor cc.Color4f to cc.Color
Merge branch 'tests_js_3.0' of https://github.com/cocos2d/cocos2d-js-tests into master_3.0

Conflicts:
	tests/CocosNodeTest/CocosNodeTest.js
	tests/LabelTest/LabelTest.js
	tests/LayerTest/LayerTest.js
	tests/SceneTest/SceneTest.js
issue #3945 Refactor cc.Color3B to cc.Color
Merge pull request #321 from SmallAiTT/tests_js_3.0_ccgame

issue #3935 Modify tests for CCGame.
Merge branch 'tests_js_3.0' of https://github.com/cocos2d/cocos2d-js-tests into master_3.0
issue #3945 Refactor setDrawColor4F/setDrawColor3B to setDrawColor
issue #3945 cc.c4b to cc.color
Merge pull request #323 from xingsenma/master_js_3.0

issue #3945 Refactor base data
Merge pull request #324 from SmallAiTT/tests_js_3.0_ccgame

issue #3935 Modify tests for CCGame.
issue #3935 Fix some bugs.