fix verdict dectecting mechanism for CF
fix verdict dectecting mechanism for CF

Since CF changed the verdict message for AC from "Accepted" to "Happy New Year", the origin regex won\'t work. The new regex search for submissionVerdict attribute of the wrapping <span>, which seems more consistent than message itself.

"Judgement failed" is not tested, because i dont know how to reproduce that, the other verdicts are tested.

BNUACM/bnuoj-vjudge,BNUACM/bnuoj-vjudge,BNUACM/bnuoj-vjudge