Information in the progress window (example: rescan) is displayed capped to fixed size instead of contents.

<img width="209" alt="screenshot 2018-12-21 at 14 58 20" src="https://user-images.githubusercontent.com/26601261/50345943-0bbd4300-0531-11e9-9c6c-e277ac69eb0c.png">

{
    QStringList strList;
    
    for (int i = 0; i < 8; i++) {
        uint64_t check = 1 << i;
        if (mask & check)
        {
            switch (check)
            {
            case NODE_NETWORK:
                strList.append("NETWORK");
                break;
            case NODE_GETUTXO:
                strList.append("GETUTXO");
                break;
            case NODE_BLOOM:
                strList.append("BLOOM");
                break;
            case NODE_WITNESS:
                strList.append("WITNESS");
                break;
            case NODE_XTHIN:
                strList.append("XTHIN");
                break;
            default:
                strList.append(QString("%1[%2]").arg("UNKNOWN").arg(check));
            }
        }
    }