[master] Merged from develop: Loading JSC(Compiled) file firstly, if it doesn't exist, then check js file. Also fix an issue that a js exception will be triggered when js file doesn't exist.
Merge pull request #3807 from dumganhar/jsc-loaded-order

[master] Merged from develop: JSC and JS file loaded order changed. (STRAT --> check JS --> check JSC) TO (START --> check JSC --> check JS).