fixed #3460
 1. add removeall on Destroy TriggerMng.
 2. Support for the same json file  parsed on 2.x and 3.x.
fixed #3460 fixes dead while.
#issue 3460 modify _ComName to _comName
fixed 3460 fixes build error
fixed #3460 SceneTest crashed when back to the main menu scene.
fixed #3460 modify error Wrong indent.
fixed #3460 revert ui action play code.
Merge pull request #4665 from chengstory/#3460

fixed #3460