optimize button
Merge branch 'master' into master_nutty_modify_framework_optimizewidgets
Invoke the “onEnter” function by the other way
Merge branch 'master' into master_nutty_modify_framework_optimizewidgets
Merge pull request #4827 from samuele3hu/masterFix

Invoke the “onEnter” function by the other way
Modify renderers draw order define.
Merge branch 'master' into master_nutty_modify_framework_optimizewidgets
Merge pull request #4818 from nutty898/master_nutty_modify_framework_optimizewidgets

optimize button
fixed #3478
                 1.  loadSceneEdtiorFileTest   -> LoadSceneEdtiorFileTest.
                 2.  add json parse to CCComAttribute.
Merge branch 'master' into #3478