重构代码；修改mapId为-1的exam_status表，表示考试状态

endian11

2020-08-13 a927c72c0f06ef5bd771e5ae00bc35155c271762

 app/src/main/java/safeluck/drive/evaluation/DB/signalConfigdb/SingalConfig.java

@@ -55,4 +55,15 @@
    public void setMainBoard(int mainBoard) {
        this.mainBoard = mainBoard;
    }

    @Override
    public String toString() {
        return "SingalConfig{" +
                "signalName='" + signalName + '\'' +
                ", index=" + index +
                ", highLevel=" + highLevel +
                ", mainBoard=" + mainBoard +
                ", func_id=" + func_id +
                '}';
    }
}